A Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization) vulnerability in the firewall process (dfwd) of Juniper Networks Junos OS allows an attacker to bypass the firewall rule sets applied to the input loopback filter on any interfaces of a device. This issue is detectable by reviewing the PFE firewall rules, as well as the firewall counters and seeing if they are incrementing or not. For example: show firewall Filter: default_bpdu_filter Filter: FILTER-INET-01 Counters: Name Bytes Packets output-match-inet 0 0 <<<<<< missing firewall packet count This issue affects: Juniper Networks Junos OS 14.1X53 versions prior to 14.1X53-D53 on QFX Series; 14.1 versions 14.1R1 and later versions prior to 15.1 versions prior to 15.1R7-S6 on QFX Series, PTX Series; 15.1X53 versions prior to 15.1X53-D593 on QFX Series; 16.1 versions prior to 16.1R7-S7 on QFX Series, PTX Series; 16.2 versions prior to 16.2R2-S11, 16.2R3 on QFX Series, PTX Series; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2 on QFX Series, PTX Series; 17.2 versions prior to 17.2R1-S9, 17.2R3-S3 on QFX Series, PTX Series; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7 on QFX Series, PTX Series; 17.4 versions prior to 17.4R2-S9, 17.4R3 on QFX Series, PTX Series; 18.1 versions prior to 18.1R3-S9 on QFX Series, PTX Series; 18.2 versions prior to 18.2R2-S6, 18.2R3-S3 on QFX Series, PTX Series; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3-S1 on QFX Series, PTX Series; 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R2-S7, 18.4R3 on QFX Series, PTX Series; 19.1 versions prior to 19.1R1-S4, 19.1R2-S1, 19.1R3 on QFX Series, PTX Series; 19.2 versions prior to 19.2R1-S3, 19.2R2 on QFX Series, PTX Series.
| Software | From | Fixed in |
|---|---|---|
| juniper / junos | 14.1x53-d45 | 14.1x53-d45.x |
| juniper / junos | 14.1x53-d35 | 14.1x53-d35.x |
| juniper / junos | 14.1x53-d10 | 14.1x53-d10.x |
| juniper / junos | 14.1x53-d40 | 14.1x53-d40.x |
| juniper / junos | 14.1x53-d30 | 14.1x53-d30.x |
| juniper / junos | 14.1x53-d42 | 14.1x53-d42.x |
| juniper / junos | 14.1x53-d15 | 14.1x53-d15.x |
| juniper / junos | 14.1x53-d25 | 14.1x53-d25.x |
| juniper / junos | 14.1x53-d38 | 14.1x53-d38.x |
| juniper / junos | 14.1x53-d44 | 14.1x53-d44.x |
| juniper / junos | 14.1x53-d27 | 14.1x53-d27.x |
| juniper / junos | 14.1x53-d16 | 14.1x53-d16.x |
| juniper / junos | 14.1x53-d43 | 14.1x53-d43.x |
| juniper / junos | 14.1x53-d50 | 14.1x53-d50.x |
| juniper / junos | 14.1x53-d26 | 14.1x53-d26.x |
| juniper / junos | 14.1x53-d34 | 14.1x53-d34.x |
| juniper / junos | 14.1x53-d46 | 14.1x53-d46.x |
| juniper / junos | 14.1x53-d48 | 14.1x53-d48.x |
| juniper / junos | 14.1x53-d20 | 14.1x53-d20.x |
| juniper / junos | 14.1x53-d47 | 14.1x53-d47.x |
| juniper / junos | 14.1x53 | 14.1x53.x |
| juniper / junos | 14.1x53-d49 | 14.1x53-d49.x |
| juniper / junos | 14.1x53-d51 | 14.1x53-d51.x |
| juniper / junos | 14.1x53-d52 | 14.1x53-d52.x |
| juniper / junos | 15.1x53-d592 | 15.1x53-d592.x |
| juniper / junos | 15.1x53-d69 | 15.1x53-d69.x |
| juniper / junos | 15.1x53-d591 | 15.1x53-d591.x |
| juniper / junos | 15.1x53-d59 | 15.1x53-d59.x |
| juniper / junos | 15.1x53-d67 | 15.1x53-d67.x |
| juniper / junos | 15.1x53-d31 | 15.1x53-d31.x |
| juniper / junos | 15.1x53-d495 | 15.1x53-d495.x |
| juniper / junos | 15.1x53-d471 | 15.1x53-d471.x |
| juniper / junos | 15.1x53-d234 | 15.1x53-d234.x |
| juniper / junos | 15.1x53-d590 | 15.1x53-d590.x |
| juniper / junos | 15.1x53-d68 | 15.1x53-d68.x |
| juniper / junos | 15.1x53-d237 | 15.1x53-d237.x |
| juniper / junos | 15.1x53-d236 | 15.1x53-d236.x |
| juniper / junos | 15.1x53-d235 | 15.1x53-d235.x |
| juniper / junos | 15.1x53 | 15.1x53.x |
| juniper / junos | 15.1x53-d66 | 15.1x53-d66.x |
| juniper / junos | 15.1x53-d232 | 15.1x53-d232.x |
| juniper / junos | 15.1x53-d233 | 15.1x53-d233.x |
| juniper / junos | 15.1x53-d56 | 15.1x53-d56.x |
| juniper / junos | 15.1x53-d490 | 15.1x53-d490.x |
| juniper / junos | 15.1x53-d470 | 15.1x53-d470.x |
| juniper / junos | 15.1x53-d58 | 15.1x53-d58.x |
| juniper / junos | 15.1x53-d230 | 15.1x53-d230.x |
| juniper / junos | 15.1x53-d50 | 15.1x53-d50.x |
| juniper / junos | 15.1x53-d51 | 15.1x53-d51.x |
| juniper / junos | 15.1x53-d52 | 15.1x53-d52.x |
| juniper / junos | 15.1x53-d55 | 15.1x53-d55.x |
| juniper / junos | 15.1x53-d65 | 15.1x53-d65.x |
| juniper / junos | 15.1x53-d231 | 15.1x53-d231.x |
| juniper / junos | 15.1x53-d32 | 15.1x53-d32.x |
| juniper / junos | 15.1x53-d57 | 15.1x53-d57.x |
| juniper / junos | 15.1x53-d34 | 15.1x53-d34.x |
| juniper / junos | 15.1x53-d64 | 15.1x53-d64.x |
| juniper / junos | 15.1x53-d210 | 15.1x53-d210.x |
| juniper / junos | 15.1x53-d70 | 15.1x53-d70.x |
| juniper / junos | 15.1x53-d21 | 15.1x53-d21.x |
| juniper / junos | 15.1x53-d60 | 15.1x53-d60.x |
| juniper / junos | 15.1x53-d48 | 15.1x53-d48.x |
| juniper / junos | 15.1x53-d45 | 15.1x53-d45.x |
| juniper / junos | 15.1x53-d61 | 15.1x53-d61.x |
| juniper / junos | 15.1x53-d63 | 15.1x53-d63.x |
| juniper / junos | 15.1x53-d62 | 15.1x53-d62.x |
| juniper / junos | 15.1x53-d30 | 15.1x53-d30.x |
| juniper / junos | 15.1x53-d33 | 15.1x53-d33.x |
| juniper / junos | 15.1x53-d25 | 15.1x53-d25.x |
| juniper / junos | 15.1x53-d20 | 15.1x53-d20.x |
| juniper / junos | 15.1x53-d40 | 15.1x53-d40.x |
| juniper / junos | 15.1x53-d47 | 15.1x53-d47.x |
| juniper / junos | 15.1x53-d10 | 15.1x53-d10.x |
| juniper / junos | 14.1-r1 | 14.1-r1.x |
| juniper / junos | 14.1-r4 | 14.1-r4.x |
| juniper / junos | 14.1-r3 | 14.1-r3.x |
| juniper / junos | 14.1-r8 | 14.1-r8.x |
| juniper / junos | 14.1-r9 | 14.1-r9.x |
| juniper / junos | 14.1-r7 | 14.1-r7.x |
| juniper / junos | 14.1-r6 | 14.1-r6.x |
| juniper / junos | 14.1-r2 | 14.1-r2.x |
| juniper / junos | 14.1-r8-s3 | 14.1-r8-s3.x |
| juniper / junos | 14.1-r5 | 14.1-r5.x |
| juniper / junos | 14.1 | 14.1.x |
| juniper / junos | 14.2 | 14.2.x |
| juniper / junos | 14.2-r5 | 14.2-r5.x |
| juniper / junos | 14.2-r7-s6 | 14.2-r7-s6.x |
| juniper / junos | 14.2-r7-s8 | 14.2-r7-s8.x |
| juniper / junos | 14.2-r7 | 14.2-r7.x |
| juniper / junos | 14.2-r4 | 14.2-r4.x |
| juniper / junos | 14.2-r | 14.2-r.x |
| juniper / junos | 14.2-r8 | 14.2-r8.x |
| juniper / junos | 14.2-r3 | 14.2-r3.x |
| juniper / junos | 14.2-r7-s7 | 14.2-r7-s7.x |
| juniper / junos | 14.2-r6 | 14.2-r6.x |
| juniper / junos | 14.2-r1 | 14.2-r1.x |
| juniper / junos | 14.2-r2 | 14.2-r2.x |
| juniper / junos | 15.1-f1 | 15.1-f1.x |
| juniper / junos | 15.1-f6-s4 | 15.1-f6-s4.x |
| juniper / junos | 15.1-f2-s3 | 15.1-f2-s3.x |
| juniper / junos | 15.1-f7 | 15.1-f7.x |
| juniper / junos | 15.1-r | 15.1-r.x |
| juniper / junos | 15.1-f2-s2 | 15.1-f2-s2.x |
| juniper / junos | 15.1-r7 | 15.1-r7.x |
| juniper / junos | 15.1-r6 | 15.1-r6.x |
| juniper / junos | 15.1-f4 | 15.1-f4.x |
| juniper / junos | 15.1-r4 | 15.1-r4.x |
| juniper / junos | 15.1-f2-s4 | 15.1-f2-s4.x |
| juniper / junos | 15.1-f5-s7 | 15.1-f5-s7.x |
| juniper / junos | 15.1-f6-s7 | 15.1-f6-s7.x |
| juniper / junos | 15.1-f6 | 15.1-f6.x |
| juniper / junos | 15.1-f2 | 15.1-f2.x |
| juniper / junos | 15.1-a1 | 15.1-a1.x |
| juniper / junos | 15.1-r3 | 15.1-r3.x |
| juniper / junos | 15.1-f3 | 15.1-f3.x |
| juniper / junos | 15.1-r2 | 15.1-r2.x |
| juniper / junos | 15.1-r5-s5 | 15.1-r5-s5.x |
| juniper / junos | 15.1-r6-s1 | 15.1-r6-s1.x |
| juniper / junos | 15.1-r5 | 15.1-r5.x |
| juniper / junos | 15.1-r1 | 15.1-r1.x |
| juniper / junos | 15.1-f2-s1 | 15.1-f2-s1.x |
| juniper / junos | 15.1-r5-s1 | 15.1-r5-s1.x |
| juniper / junos | 15.1-r5-s6 | 15.1-r5-s6.x |
| juniper / junos | 15.1-r6-s2 | 15.1-r6-s2.x |
| juniper / junos | 15.1-f6-s8 | 15.1-f6-s8.x |
| juniper / junos | 15.1-r5-s3 | 15.1-r5-s3.x |
| juniper / junos | 15.1-r4-s8 | 15.1-r4-s8.x |
| juniper / junos | 15.1-f5 | 15.1-f5.x |
| juniper / junos | 15.1-f6-s3 | 15.1-f6-s3.x |
| juniper / junos | 15.1-r7-s1 | 15.1-r7-s1.x |
| juniper / junos | 15.1-f6-s10 | 15.1-f6-s10.x |
| juniper / junos | 15.1-r4-s9 | 15.1-r4-s9.x |
| juniper / junos | 15.1-r6-s6 | 15.1-r6-s6.x |
| juniper / junos | 15.1-r6-s3 | 15.1-r6-s3.x |
| juniper / junos | 15.1-r6-s4 | 15.1-r6-s4.x |
| juniper / junos | 15.1-f6-s9 | 15.1-f6-s9.x |
| juniper / junos | 15.1-f | 15.1-f.x |
| juniper / junos | 15.1-r7-s2 | 15.1-r7-s2.x |
| juniper / junos | 15.1-r7-s3 | 15.1-r7-s3.x |
| juniper / junos | 15.1-f6-s2 | 15.1-f6-s2.x |
| juniper / junos | 15.1-f6-s1 | 15.1-f6-s1.x |
| juniper / junos | 15.1-f6-s5 | 15.1-f6-s5.x |
| juniper / junos | 15.1-f6-s6 | 15.1-f6-s6.x |
| juniper / junos | 15.1 | 15.1.x |
| juniper / junos | 15.1-r4-s7 | 15.1-r4-s7.x |
| juniper / junos | 15.1-r7-s4 | 15.1-r7-s4.x |
| juniper / junos | 15.1-r7-s5 | 15.1-r7-s5.x |
| juniper / junos | 15.1-f6-s12 | 15.1-f6-s12.x |
| juniper / junos | 16.1-r7-s5 | 16.1-r7-s5.x |
| juniper / junos | 16.1-r4-s12 | 16.1-r4-s12.x |
| juniper / junos | 16.1-r4-s6 | 16.1-r4-s6.x |
| juniper / junos | 16.1-r4-s2 | 16.1-r4-s2.x |
| juniper / junos | 16.1-r7-s2 | 16.1-r7-s2.x |
| juniper / junos | 16.1-r7-s3 | 16.1-r7-s3.x |
| juniper / junos | 16.1-r7-s4 | 16.1-r7-s4.x |
| juniper / junos | 16.1 | 16.1.x |
| juniper / junos | 16.1-r3-s11 | 16.1-r3-s11.x |
| juniper / junos | 16.1-r7-s6 | 16.1-r7-s6.x |
| juniper / junos | 16.1-r3-s10 | 16.1-r3-s10.x |
| juniper / junos | 16.1-r4-s9 | 16.1-r4-s9.x |
| juniper / junos | 16.1-r6-s3 | 16.1-r6-s3.x |
| juniper / junos | 16.1-r5-s4 | 16.1-r5-s4.x |
| juniper / junos | 16.1-r6-s1 | 16.1-r6-s1.x |
| juniper / junos | 16.1-r7 | 16.1-r7.x |
| juniper / junos | 16.1-r3-s8 | 16.1-r3-s8.x |
| juniper / junos | 16.1-r6-s4 | 16.1-r6-s4.x |
| juniper / junos | 16.1-r6-s6 | 16.1-r6-s6.x |
| juniper / junos | 16.1-r4-s8 | 16.1-r4-s8.x |
| juniper / junos | 16.1-r2 | 16.1-r2.x |
| juniper / junos | 16.1-r3 | 16.1-r3.x |
| juniper / junos | 16.1-r4-s3 | 16.1-r4-s3.x |
| juniper / junos | 16.1-r5 | 16.1-r5.x |
| juniper / junos | 16.1-r6 | 16.1-r6.x |
| juniper / junos | 16.1-r4 | 16.1-r4.x |
| juniper / junos | 16.1-r4-s4 | 16.1-r4-s4.x |
| juniper / junos | 16.1-r | 16.1-r.x |
| juniper / junos | 16.1-r1 | 16.1-r1.x |
| juniper / junos | 16.2-r2 | 16.2-r2.x |
| juniper / junos | 16.2-r1 | 16.2-r1.x |
| juniper / junos | 16.2-r1-s6 | 16.2-r1-s6.x |
| juniper / junos | 16.2-r2-s5 | 16.2-r2-s5.x |
| juniper / junos | 16.2-r2-s1 | 16.2-r2-s1.x |
| juniper / junos | 16.2-r2-s2 | 16.2-r2-s2.x |
| juniper / junos | 16.2-r2-s6 | 16.2-r2-s6.x |
| juniper / junos | 16.2-r2-s7 | 16.2-r2-s7.x |
| juniper / junos | 16.2-r2-s8 | 16.2-r2-s8.x |
| juniper / junos | 16.2 | 16.2.x |
| juniper / junos | 16.2-r2-s10 | 16.2-r2-s10.x |
| juniper / junos | 16.2-r2-s9 | 16.2-r2-s9.x |
| juniper / junos | 17.1-r2-s8 | 17.1-r2-s8.x |
| juniper / junos | 17.1 | 17.1.x |
| juniper / junos | 17.1-r2-s9 | 17.1-r2-s9.x |
| juniper / junos | 17.1-r2-s10 | 17.1-r2-s10.x |
| juniper / junos | 17.1-r3-s1 | 17.1-r3-s1.x |
| juniper / junos | 17.1-r2-s1 | 17.1-r2-s1.x |
| juniper / junos | 17.1-r2-s2 | 17.1-r2-s2.x |
| juniper / junos | 17.1-r2-s3 | 17.1-r2-s3.x |
| juniper / junos | 17.1-r2-s4 | 17.1-r2-s4.x |
| juniper / junos | 17.1-r2-s5 | 17.1-r2-s5.x |
| juniper / junos | 17.1-r2-s6 | 17.1-r2-s6.x |
| juniper / junos | 17.1-r2-s7 | 17.1-r2-s7.x |
| juniper / junos | 17.1-r1-s7 | 17.1-r1-s7.x |
| juniper / junos | 17.1-r1 | 17.1-r1.x |
| juniper / junos | 17.1-r2 | 17.1-r2.x |
| juniper / junos | 17.1-r3 | 17.1-r3.x |
| juniper / junos | 17.2-r1 | 17.2-r1.x |
| juniper / junos | 17.2-r2 | 17.2-r2.x |
| juniper / junos | 17.2-r1-s2 | 17.2-r1-s2.x |
| juniper / junos | 17.2-r1-s6 | 17.2-r1-s6.x |
| juniper / junos | 17.2-r2-s6 | 17.2-r2-s6.x |
| juniper / junos | 17.2-r2-s4 | 17.2-r2-s4.x |
| juniper / junos | 17.2-r3 | 17.2-r3.x |
| juniper / junos | 17.2-r1-s7 | 17.2-r1-s7.x |
| juniper / junos | 17.2-r1-s4 | 17.2-r1-s4.x |
| juniper / junos | 17.2-r1-s1 | 17.2-r1-s1.x |
| juniper / junos | 17.2-r1-s3 | 17.2-r1-s3.x |
| juniper / junos | 17.2-r1-s5 | 17.2-r1-s5.x |
| juniper / junos | 17.2-r2-s11 | 17.2-r2-s11.x |
| juniper / junos | 17.2-r2-s7 | 17.2-r2-s7.x |
| juniper / junos | 17.2-r3-s1 | 17.2-r3-s1.x |
| juniper / junos | 17.2 | 17.2.x |
| juniper / junos | 17.2-r1-s8 | 17.2-r1-s8.x |
| juniper / junos | 17.2-r3-s2 | 17.2-r3-s2.x |
| juniper / junos | 17.3-r3-s6 | 17.3-r3-s6.x |
| juniper / junos | 17.3-r2-s3 | 17.3-r2-s3.x |
| juniper / junos | 17.3-r1-s1 | 17.3-r1-s1.x |
| juniper / junos | 17.3-r2-s4 | 17.3-r2-s4.x |
| juniper / junos | 17.3 | 17.3.x |
| juniper / junos | 17.3-r3-s3 | 17.3-r3-s3.x |
| juniper / junos | 17.3-r2-s1 | 17.3-r2-s1.x |
| juniper / junos | 17.3-r3-s4 | 17.3-r3-s4.x |
| juniper / junos | 17.3-r3-s5 | 17.3-r3-s5.x |
| juniper / junos | 17.3-r3-s10 | 17.3-r3-s10.x |
| juniper / junos | 17.3-r3-s1 | 17.3-r3-s1.x |
| juniper / junos | 17.3-r3-s2 | 17.3-r3-s2.x |
| juniper / junos | 17.3-r2-s2 | 17.3-r2-s2.x |
| juniper / junos | 17.3-r3 | 17.3-r3.x |
| juniper / junos | 17.3-r2 | 17.3-r2.x |
| juniper / junos | 17.3-r1-s4 | 17.3-r1-s4.x |
| juniper / junos | 17.3-r1 | 17.3-r1.x |
| juniper / junos | 17.4-r1-s3 | 17.4-r1-s3.x |
| juniper / junos | 17.4-r1 | 17.4-r1.x |
| juniper / junos | 17.4-r2 | 17.4-r2.x |
| juniper / junos | 17.4-r1-s2 | 17.4-r1-s2.x |
| juniper / junos | 17.4-r2-s2 | 17.4-r2-s2.x |
| juniper / junos | 17.4-r1-s1 | 17.4-r1-s1.x |
| juniper / junos | 17.4 | 17.4.x |
| juniper / junos | 17.4-r2-s11 | 17.4-r2-s11.x |
| juniper / junos | 17.4-r2-s10 | 17.4-r2-s10.x |
| juniper / junos | 17.4-r2-s3 | 17.4-r2-s3.x |
| juniper / junos | 17.4-r2-s4 | 17.4-r2-s4.x |
| juniper / junos | 17.4-r1-s6 | 17.4-r1-s6.x |
| juniper / junos | 17.4-r1-s4 | 17.4-r1-s4.x |
| juniper / junos | 17.4-r1-s7 | 17.4-r1-s7.x |
| juniper / junos | 17.4-r2-s1 | 17.4-r2-s1.x |
| juniper / junos | 17.4-r1-s5 | 17.4-r1-s5.x |
| juniper / junos | 17.4-r2-s8 | 17.4-r2-s8.x |
| juniper / junos | 17.4-r2-s5 | 17.4-r2-s5.x |
| juniper / junos | 17.4-r2-s6 | 17.4-r2-s6.x |
| juniper / junos | 17.4-r2-s7 | 17.4-r2-s7.x |
| juniper / junos | 18.1-r3-s6 | 18.1-r3-s6.x |
| juniper / junos | 18.1-r3-s7 | 18.1-r3-s7.x |
| juniper / junos | 18.1-r3-s1 | 18.1-r3-s1.x |
| juniper / junos | 18.1-r3-s5 | 18.1-r3-s5.x |
| juniper / junos | 18.1-r3-s10 | 18.1-r3-s10.x |
| juniper / junos | 18.1-r3-s11 | 18.1-r3-s11.x |
| juniper / junos | 18.1-r3-s8 | 18.1-r3-s8.x |
| juniper / junos | 18.1-r3-s4 | 18.1-r3-s4.x |
| juniper / junos | 18.1-r3-s3 | 18.1-r3-s3.x |
| juniper / junos | 18.1-r3-s2 | 18.1-r3-s2.x |
| juniper / junos | 18.1 | 18.1.x |
| juniper / junos | 18.1-r2-s1 | 18.1-r2-s1.x |
| juniper / junos | 18.1-r2-s4 | 18.1-r2-s4.x |
| juniper / junos | 18.1-r2-s2 | 18.1-r2-s2.x |
| juniper / junos | 18.1-r1 | 18.1-r1.x |
| juniper / junos | 18.1-r2 | 18.1-r2.x |
| juniper / junos | 18.1-r3 | 18.1-r3.x |
| juniper / junos | 18.2-r1 | 18.2-r1.x |
| juniper / junos | 18.2 | 18.2.x |
| juniper / junos | 18.2-r2-s1 | 18.2-r2-s1.x |
| juniper / junos | 18.2-r2-s2 | 18.2-r2-s2.x |
| juniper / junos | 18.2-r1-s3 | 18.2-r1-s3.x |
| juniper / junos | 18.2-r3-s2 | 18.2-r3-s2.x |
| juniper / junos | 18.2-r1-s2 | 18.2-r1-s2.x |
| juniper / junos | 18.2-r2-s3 | 18.2-r2-s3.x |
| juniper / junos | 18.2-r2-s4 | 18.2-r2-s4.x |
| juniper / junos | 18.2-r1-s4 | 18.2-r1-s4.x |
| juniper / junos | 18.2-r1-s5 | 18.2-r1-s5.x |
| juniper / junos | 18.2-r2 | 18.2-r2.x |
| juniper / junos | 18.2-r2-s5 | 18.2-r2-s5.x |
| juniper / junos | 18.2-r3-s1 | 18.2-r3-s1.x |
| juniper / junos | 18.2-r3 | 18.2-r3.x |
| juniper / junos | 18.3-r1-s5 | 18.3-r1-s5.x |
| juniper / junos | 18.3-r1 | 18.3-r1.x |
| juniper / junos | 18.3-r1-s2 | 18.3-r1-s2.x |
| juniper / junos | 18.3 | 18.3.x |
| juniper / junos | 18.3-r1-s4 | 18.3-r1-s4.x |
| juniper / junos | 18.3-r1-s3 | 18.3-r1-s3.x |
| juniper / junos | 18.3-r3 | 18.3-r3.x |
| juniper / junos | 18.3-r1-s6 | 18.3-r1-s6.x |
| juniper / junos | 18.3-r1-s1 | 18.3-r1-s1.x |
| juniper / junos | 18.4-r2-s2 | 18.4-r2-s2.x |
| juniper / junos | 18.4-r2-s1 | 18.4-r2-s1.x |
| juniper / junos | 18.4-r2 | 18.4-r2.x |
| juniper / junos | 19.1-r1 | 19.1-r1.x |
| juniper / junos | 19.1 | 19.1.x |
| juniper / junos | 19.1-r1-s1 | 19.1-r1-s1.x |
| juniper / junos | 19.1-r1-s3 | 19.1-r1-s3.x |
| juniper / junos | 19.1-r1-s2 | 19.1-r1-s2.x |
| juniper / junos | 19.1-r2 | 19.1-r2.x |
| juniper / junos | 19.2 | 19.2.x |
| juniper / junos | 19.2-r1-s1 | 19.2-r1-s1.x |
| juniper / junos | 19.2-r1-s2 | 19.2-r1-s2.x |
| juniper / junos | 19.2-r1 | 19.2-r1.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.