Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2024-20307

A vulnerability in the IKEv1 fragmentation code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a heap overflow, resulting in an affected device reloading.

This vulnerability exists because crafted, fragmented IKEv1 packets are not properly reassembled. An attacker could exploit this vulnerability by sending crafted UDP packets to an affected system. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Note: Only traffic that is directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered by IPv4 and IPv6 traffic.

  • Published: Mar 27, 2024
  • Updated: Nov 16, 2025
  • CVE: CVE-2024-20307
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

CWEs:

Software From Fixed in
cisco / ios 15.1(2)sy10 15.1(2)sy10.x
cisco / ios 15.5(3)m4a 15.5(3)m4a.x
cisco / ios 15.2(4)ea4 15.2(4)ea4.x
cisco / ios 15.2(3)e4 15.2(3)e4.x
cisco / ios 15.2(4)ec1 15.2(4)ec1.x
cisco / ios 15.4(1)sy 15.4(1)sy.x
cisco / ios 15.3(3)s10 15.3(3)s10.x
cisco / ios 15.2(3)e5 15.2(3)e5.x
cisco / ios 15.3(3)m8 15.3(3)m8.x
cisco / ios 15.2(1)sy3 15.2(1)sy3.x
cisco / ios 15.5(1)s4 15.5(1)s4.x
cisco / ios 15.5(2)s4 15.5(2)s4.x
cisco / ios 15.5(3)s4 15.5(3)s4.x
cisco / ios 15.5(3)s5 15.5(3)s5.x
cisco / ios 15.5(3)m3 15.5(3)m3.x
cisco / ios 15.3(1)sy1 15.3(1)sy1.x
cisco / ios 15.3(1)sy2 15.3(1)sy2.x
cisco / ios 15.7(3)m 15.7(3)m.x
cisco / ios 15.1(2)sg8 15.1(2)sg8.x
cisco / ios 15.2(4)m11 15.2(4)m11.x
cisco / ios 15.1(2)sy8 15.1(2)sy8.x
cisco / ios 15.1(2)sy11 15.1(2)sy11.x
cisco / ios 15.3(3)s9 15.3(3)s9.x
cisco / ios 15.3(3)s8a 15.3(3)s8a.x
cisco / ios 15.2(4)e2 15.2(4)e2.x
cisco / ios 15.2(4)e3 15.2(4)e3.x
cisco / ios 15.2(5b)e 15.2(5b)e.x
cisco / ios 15.2(4)e4 15.2(4)e4.x
cisco / ios 15.4(3)s7 15.4(3)s7.x
cisco / ios 15.4(3)s6a 15.4(3)s6a.x
cisco / ios 15.3(3)m9 15.3(3)m9.x
cisco / ios 15.3(3)m8a 15.3(3)m8a.x
cisco / ios 15.2(1)sy4 15.2(1)sy4.x
cisco / ios 15.5(2)t4 15.5(2)t4.x
cisco / ios 15.2(5)ea 15.2(5)ea.x
cisco / ios 15.5(3)m4 15.5(3)m4.x
cisco / ios 15.5(3)m5 15.5(3)m5.x
cisco / ios 15.5(3)m6 15.5(3)m6.x
cisco / ios 15.2(4)ec2 15.2(4)ec2.x
cisco / ios 15.4(1)sy1 15.4(1)sy1.x
cisco / ios 15.4(1)sy2 15.4(1)sy2.x
cisco / ios 15.5(1)sy 15.5(1)sy.x
cisco / ios 15.1(2)sy9 15.1(2)sy9.x
cisco / ios 15.1(2)sy12 15.1(2)sy12.x
cisco / ios 15.1(2)sy13 15.1(2)sy13.x
cisco / ios 15.1(2)sy15 15.1(2)sy15.x
cisco / ios 15.3(3)s8 15.3(3)s8.x
cisco / ios 15.2(5)e 15.2(5)e.x
cisco / ios 15.2(4)e5 15.2(4)e5.x
cisco / ios 15.2(4)e5a 15.2(4)e5a.x
cisco / ios 15.2(4)e6 15.2(4)e6.x
cisco / ios 15.2(4)e7 15.2(4)e7.x
cisco / ios 15.4(3)s6 15.4(3)s6.x
cisco / ios 15.4(3)s8 15.4(3)s8.x
cisco / ios 15.4(3)s9 15.4(3)s9.x
cisco / ios 15.4(3)s10 15.4(3)s10.x
cisco / ios 15.3(3)m10 15.3(3)m10.x
cisco / ios 15.2(1)sy5 15.2(1)sy5.x
cisco / ios 15.2(1)sy6 15.2(1)sy6.x
cisco / ios 15.2(1)sy7 15.2(1)sy7.x
cisco / ios 15.5(3)s3 15.5(3)s3.x
cisco / ios 15.5(3)s6 15.5(3)s6.x
cisco / ios 15.5(3)s6a 15.5(3)s6a.x
cisco / ios 15.5(3)s7 15.5(3)s7.x
cisco / ios 15.5(3)s6b 15.5(3)s6b.x
cisco / ios 15.5(3)s8 15.5(3)s8.x
cisco / ios 15.5(3)s10 15.5(3)s10.x
cisco / ios 15.2(4)ea5 15.2(4)ea5.x
cisco / ios 15.2(4)ea6 15.2(4)ea6.x
cisco / ios 15.2(4)ea7 15.2(4)ea7.x
cisco / ios 15.2(4)ea8 15.2(4)ea8.x
cisco / ios 15.2(4)ea9 15.2(4)ea9.x
cisco / ios 15.5(3)m7 15.5(3)m7.x
cisco / ios 15.5(3)m6a 15.5(3)m6a.x
cisco / ios 15.5(3)m8 15.5(3)m8.x
cisco / ios 15.4(1)sy3 15.4(1)sy3.x
cisco / ios 15.4(1)sy4 15.4(1)sy4.x
cisco / ios 15.5(1)sy1 15.5(1)sy1.x
cisco / ios 15.5(1)sy2 15.5(1)sy2.x
cisco / ios 15.5(1)sy4 15.5(1)sy4.x
cisco / ios 15.7(3)m1 15.7(3)m1.x
cisco / ios 15.7(3)m0a 15.7(3)m0a.x
cisco / ios 15.7(3)m3 15.7(3)m3.x
cisco / ios 15.7(3)m2 15.7(3)m2.x
cisco / ios 15.7(3)m4 15.7(3)m4.x
cisco / ios 15.8(3)m 15.8(3)m.x
cisco / ios 15.8(3)m0a 15.8(3)m0a.x
cisco / ios 15.8(3)m0b 15.8(3)m0b.x
cisco / ios 15.8(3)m3a 15.8(3)m3a.x
cisco / ios 15.8(3)m3b 15.8(3)m3b.x
cisco / ios 15.1(2)sy14 15.1(2)sy14.x
cisco / ios 15.1(2)sy16 15.1(2)sy16.x
cisco / ios 15.2(4)e8 15.2(4)e8.x
cisco / ios 15.2(4)e9 15.2(4)e9.x
cisco / ios 15.2(4)e10 15.2(4)e10.x
cisco / ios 15.2(4)e10a 15.2(4)e10a.x
cisco / ios 15.2(4)e10d 15.2(4)e10d.x
cisco / ios 15.2(1)sy8 15.2(1)sy8.x
cisco / ios 15.5(3)s9 15.5(3)s9.x
cisco / ios 15.5(3)s9a 15.5(3)s9a.x
cisco / ios 15.2(4)ea9a 15.2(4)ea9a.x
cisco / ios 15.5(3)m9 15.5(3)m9.x
cisco / ios 15.5(3)m10 15.5(3)m10.x
cisco / ios 15.5(1)sy3 15.5(1)sy3.x
cisco / ios 15.5(1)sy5 15.5(1)sy5.x
cisco / ios 15.5(1)sy6 15.5(1)sy6.x
cisco / ios 15.5(1)sy7 15.5(1)sy7.x
cisco / ios 15.5(1)sy8 15.5(1)sy8.x
cisco / ios 15.5(1)sy9 15.5(1)sy9.x
cisco / ios 15.5(1)sy10 15.5(1)sy10.x
cisco / ios 15.5(1)sy11 15.5(1)sy11.x
cisco / ios 15.7(3)m5 15.7(3)m5.x
cisco / ios 15.7(3)m4a 15.7(3)m4a.x
cisco / ios 15.7(3)m4b 15.7(3)m4b.x
cisco / ios 15.7(3)m6 15.7(3)m6.x
cisco / ios 15.7(3)m7 15.7(3)m7.x
cisco / ios 15.7(3)m8 15.7(3)m8.x
cisco / ios 15.7(3)m9 15.7(3)m9.x
cisco / ios 15.8(3)m1 15.8(3)m1.x
cisco / ios 15.8(3)m2 15.8(3)m2.x
cisco / ios 15.8(3)m1a 15.8(3)m1a.x
cisco / ios 15.8(3)m3 15.8(3)m3.x
cisco / ios 15.8(3)m2a 15.8(3)m2a.x
cisco / ios 15.8(3)m4 15.8(3)m4.x
cisco / ios 15.8(3)m5 15.8(3)m5.x
cisco / ios 15.8(3)m6 15.8(3)m6.x
cisco / ios 15.8(3)m7 15.8(3)m7.x
cisco / ios 15.8(3)m8 15.8(3)m8.x
cisco / ios 15.8(3)m9 15.8(3)m9.x
cisco / ios 15.8(3)m10 15.8(3)m10.x
cisco / ios 15.9(3)m 15.9(3)m.x
cisco / ios 15.9(3)m1 15.9(3)m1.x
cisco / ios 15.9(3)m0a 15.9(3)m0a.x
cisco / ios 15.9(3)m2 15.9(3)m2.x
cisco / ios 15.9(3)m3 15.9(3)m3.x
cisco / ios 15.9(3)m2a 15.9(3)m2a.x
cisco / ios 15.9(3)m3a 15.9(3)m3a.x
cisco / ios 15.9(3)m4 15.9(3)m4.x
cisco / ios 15.9(3)m3b 15.9(3)m3b.x
cisco / ios 15.9(3)m5 15.9(3)m5.x
cisco / ios 15.9(3)m4a 15.9(3)m4a.x
cisco / ios 15.9(3)m6 15.9(3)m6.x
cisco / ios 15.9(3)m7 15.9(3)m7.x
cisco / ios 15.9(3)m6a 15.9(3)m6a.x
cisco / ios 15.9(3)m6b 15.9(3)m6b.x
cisco / ios 15.9(3)m7a 15.9(3)m7a.x
cisco / ios 15.3(3)jpi11 15.3(3)jpi11.x
cisco / ios_xe 3.13.6s 3.13.6s.x
cisco / ios_xe 3.14.4s 3.14.4s.x
cisco / ios_xe 3.7.4e 3.7.4e.x
cisco / ios_xe 3.9.0e 3.9.0e.x
cisco / ios_xe 16.2.1 16.2.1.x
cisco / ios_xe 16.1.3 16.1.3.x
cisco / ios_xe 3.4.8sg 3.4.8sg.x
cisco / ios_xe 3.10.8s 3.10.8s.x
cisco / ios_xe 3.13.7as 3.13.7as.x
cisco / ios_xe 3.7.5e 3.7.5e.x
cisco / ios_xe 3.16.4s 3.16.4s.x
cisco / ios_xe 3.16.5s 3.16.5s.x
cisco / ios_xe 3.16.4ds 3.16.4ds.x
cisco / ios_xe 3.16.6s 3.16.6s.x
cisco / ios_xe 3.8.2e 3.8.2e.x
cisco / ios_xe 3.8.3e 3.8.3e.x
cisco / ios_xe 3.8.4e 3.8.4e.x
cisco / ios_xe 16.6.1 16.6.1.x
cisco / ios_xe 3.10.8as 3.10.8as.x
cisco / ios_xe 3.10.9s 3.10.9s.x
cisco / ios_xe 3.13.7s 3.13.7s.x
cisco / ios_xe 3.13.6as 3.13.6as.x
cisco / ios_xe 3.13.8s 3.13.8s.x
cisco / ios_xe 3.13.9s 3.13.9s.x
cisco / ios_xe 3.15.4s 3.15.4s.x
cisco / ios_xe 3.16.3s 3.16.3s.x
cisco / ios_xe 3.16.3as 3.16.3as.x
cisco / ios_xe 3.16.4as 3.16.4as.x
cisco / ios_xe 3.16.4bs 3.16.4bs.x
cisco / ios_xe 3.16.6bs 3.16.6bs.x
cisco / ios_xe 16.2.2 16.2.2.x
cisco / ios_xe 16.3.1 16.3.1.x
cisco / ios_xe 16.3.2 16.3.2.x
cisco / ios_xe 16.3.3 16.3.3.x
cisco / ios_xe 16.3.1a 16.3.1a.x
cisco / ios_xe 16.3.4 16.3.4.x
cisco / ios_xe 16.3.5b 16.3.5b.x
cisco / ios_xe 16.4.1 16.4.1.x
cisco / ios_xe 16.4.2 16.4.2.x
cisco / ios_xe 16.5.1 16.5.1.x
cisco / ios_xe 16.5.1a 16.5.1a.x
cisco / ios_xe 16.5.1b 16.5.1b.x
cisco / ios_xe 3.10.10s 3.10.10s.x
cisco / ios_xe 3.13.10s 3.13.10s.x
cisco / ios_xe 3.16.7s 3.16.7s.x
cisco / ios_xe 3.16.7as 3.16.7as.x
cisco / ios_xe 3.16.7bs 3.16.7bs.x
cisco / ios_xe 3.16.8s 3.16.8s.x
cisco / ios_xe 3.16.10s 3.16.10s.x
cisco / ios_xe 3.8.5e 3.8.5e.x
cisco / ios_xe 3.8.5ae 3.8.5ae.x
cisco / ios_xe 3.8.6e 3.8.6e.x
cisco / ios_xe 3.8.7e 3.8.7e.x
cisco / ios_xe 16.3.5 16.3.5.x
cisco / ios_xe 16.3.6 16.3.6.x
cisco / ios_xe 16.3.7 16.3.7.x
cisco / ios_xe 16.3.8 16.3.8.x
cisco / ios_xe 16.4.3 16.4.3.x
cisco / ios_xe 16.5.2 16.5.2.x
cisco / ios_xe 16.5.3 16.5.3.x
cisco / ios_xe 16.6.2 16.6.2.x
cisco / ios_xe 16.6.3 16.6.3.x
cisco / ios_xe 16.6.4 16.6.4.x
cisco / ios_xe 16.6.5 16.6.5.x
cisco / ios_xe 16.6.4a 16.6.4a.x
cisco / ios_xe 16.7.1 16.7.1.x
cisco / ios_xe 16.7.1a 16.7.1a.x
cisco / ios_xe 16.7.1b 16.7.1b.x
cisco / ios_xe 16.7.2 16.7.2.x
cisco / ios_xe 16.7.3 16.7.3.x
cisco / ios_xe 16.7.4 16.7.4.x
cisco / ios_xe 16.8.1 16.8.1.x
cisco / ios_xe 16.8.1a 16.8.1a.x
cisco / ios_xe 16.8.1b 16.8.1b.x
cisco / ios_xe 16.8.1s 16.8.1s.x
cisco / ios_xe 16.8.1c 16.8.1c.x
cisco / ios_xe 16.8.1d 16.8.1d.x
cisco / ios_xe 16.8.2 16.8.2.x
cisco / ios_xe 16.8.1e 16.8.1e.x
cisco / ios_xe 16.9.1 16.9.1.x
cisco / ios_xe 16.9.2 16.9.2.x
cisco / ios_xe 16.9.1a 16.9.1a.x
cisco / ios_xe 16.9.1b 16.9.1b.x
cisco / ios_xe 16.9.1s 16.9.1s.x
cisco / ios_xe 16.10.1 16.10.1.x
cisco / ios_xe 16.11.1 16.11.1.x
cisco / ios_xe 16.11.1a 16.11.1a.x
cisco / ios_xe 16.12.1 16.12.1.x
cisco / ios_xe 16.12.1c 16.12.1c.x
cisco / ios_xe 17.1.1 17.1.1.x
cisco / ios_xe 3.16.9s 3.16.9s.x
cisco / ios_xe 3.8.8e 3.8.8e.x
cisco / ios_xe 3.8.9e 3.8.9e.x
cisco / ios_xe 3.8.10e 3.8.10e.x
cisco / ios_xe 16.3.9 16.3.9.x
cisco / ios_xe 16.3.10 16.3.10.x
cisco / ios_xe 16.3.11 16.3.11.x
cisco / ios_xe 16.6.5a 16.6.5a.x
cisco / ios_xe 16.6.6 16.6.6.x
cisco / ios_xe 16.6.7 16.6.7.x
cisco / ios_xe 16.6.8 16.6.8.x
cisco / ios_xe 16.6.9 16.6.9.x
cisco / ios_xe 16.6.10 16.6.10.x
cisco / ios_xe 16.8.3 16.8.3.x
cisco / ios_xe 16.9.3 16.9.3.x
cisco / ios_xe 16.9.4 16.9.4.x
cisco / ios_xe 16.9.3a 16.9.3a.x
cisco / ios_xe 16.9.5 16.9.5.x
cisco / ios_xe 16.9.5f 16.9.5f.x
cisco / ios_xe 16.9.6 16.9.6.x
cisco / ios_xe 16.9.7 16.9.7.x
cisco / ios_xe 16.9.8 16.9.8.x
cisco / ios_xe 16.10.1a 16.10.1a.x
cisco / ios_xe 16.10.1b 16.10.1b.x
cisco / ios_xe 16.10.1s 16.10.1s.x
cisco / ios_xe 16.10.1c 16.10.1c.x
cisco / ios_xe 16.10.1e 16.10.1e.x
cisco / ios_xe 16.10.1d 16.10.1d.x
cisco / ios_xe 16.10.2 16.10.2.x
cisco / ios_xe 16.10.1f 16.10.1f.x
cisco / ios_xe 16.10.1g 16.10.1g.x
cisco / ios_xe 16.10.3 16.10.3.x
cisco / ios_xe 16.11.1b 16.11.1b.x
cisco / ios_xe 16.11.2 16.11.2.x
cisco / ios_xe 16.11.1s 16.11.1s.x
cisco / ios_xe 16.12.1s 16.12.1s.x
cisco / ios_xe 16.12.1a 16.12.1a.x
cisco / ios_xe 16.12.1w 16.12.1w.x
cisco / ios_xe 16.12.2 16.12.2.x
cisco / ios_xe 16.12.1y 16.12.1y.x
cisco / ios_xe 16.12.2a 16.12.2a.x
cisco / ios_xe 16.12.3 16.12.3.x
cisco / ios_xe 16.12.8 16.12.8.x
cisco / ios_xe 16.12.2s 16.12.2s.x
cisco / ios_xe 16.12.1x 16.12.1x.x
cisco / ios_xe 16.12.1t 16.12.1t.x
cisco / ios_xe 16.12.4 16.12.4.x
cisco / ios_xe 16.12.3s 16.12.3s.x
cisco / ios_xe 16.12.3a 16.12.3a.x
cisco / ios_xe 16.12.4a 16.12.4a.x
cisco / ios_xe 16.12.5 16.12.5.x
cisco / ios_xe 16.12.6 16.12.6.x
cisco / ios_xe 16.12.1z1 16.12.1z1.x
cisco / ios_xe 16.12.5a 16.12.5a.x
cisco / ios_xe 16.12.5b 16.12.5b.x
cisco / ios_xe 16.12.1z2 16.12.1z2.x
cisco / ios_xe 16.12.6a 16.12.6a.x
cisco / ios_xe 16.12.7 16.12.7.x
cisco / ios_xe 17.1.1a 17.1.1a.x
cisco / ios_xe 17.1.1s 17.1.1s.x
cisco / ios_xe 17.1.1t 17.1.1t.x
cisco / ios_xe 17.1.3 17.1.3.x
cisco / ios_xe 17.2.1 17.2.1.x
cisco / ios_xe 17.2.1r 17.2.1r.x
cisco / ios_xe 17.2.1a 17.2.1a.x
cisco / ios_xe 17.2.1v 17.2.1v.x
cisco / ios_xe 17.2.2 17.2.2.x
cisco / ios_xe 17.2.3 17.2.3.x
cisco / ios_xe 17.3.1 17.3.1.x
cisco / ios_xe 17.3.2 17.3.2.x
cisco / ios_xe 17.3.3 17.3.3.x
cisco / ios_xe 17.3.1a 17.3.1a.x
cisco / ios_xe 17.3.1w 17.3.1w.x
cisco / ios_xe 17.3.2a 17.3.2a.x
cisco / ios_xe 17.3.1x 17.3.1x.x
cisco / ios_xe 17.3.1z 17.3.1z.x
cisco / ios_xe 17.3.4 17.3.4.x
cisco / ios_xe 17.3.5 17.3.5.x
cisco / ios_xe 17.3.4a 17.3.4a.x
cisco / ios_xe 17.3.4b 17.3.4b.x
cisco / ios_xe 17.3.4c 17.3.4c.x
cisco / ios_xe 17.4.1 17.4.1.x
cisco / ios_xe 17.4.2 17.4.2.x
cisco / ios_xe 17.4.1a 17.4.1a.x
cisco / ios_xe 17.4.1b 17.4.1b.x
cisco / ios_xe 17.4.2a 17.4.2a.x
cisco / ios_xe 17.5.1 17.5.1.x
cisco / ios_xe 17.5.1a 17.5.1a.x
cisco / ios_xe 17.6.1 17.6.1.x
cisco / ios_xe 17.6.2 17.6.2.x
cisco / ios_xe 17.6.1w 17.6.1w.x
cisco / ios_xe 17.6.1a 17.6.1a.x
cisco / ios_xe 17.6.3 17.6.3.x
cisco / ios_xe 17.6.3a 17.6.3a.x
cisco / ios_xe 17.7.1 17.7.1.x
cisco / ios_xe 17.9.1 17.9.1.x
cisco / ios_xe 16.12.9 16.12.9.x
cisco / ios_xe 17.3.6 17.3.6.x
cisco / ios_xe 17.3.5a 17.3.5a.x
cisco / ios_xe 17.3.5b 17.3.5b.x
cisco / ios_xe 17.3.7 17.3.7.x
cisco / ios_xe 17.6.1x 17.6.1x.x
cisco / ios_xe 17.6.1y 17.6.1y.x
cisco / ios_xe 17.6.1z 17.6.1z.x
cisco / ios_xe 17.6.4 17.6.4.x
cisco / ios_xe 17.6.1z1 17.6.1z1.x
cisco / ios_xe 17.6.5 17.6.5.x
cisco / ios_xe 17.6.5a 17.6.5a.x
cisco / ios_xe 17.7.1a 17.7.1a.x
cisco / ios_xe 17.7.1b 17.7.1b.x
cisco / ios_xe 17.7.2 17.7.2.x
cisco / ios_xe 17.10.1 17.10.1.x
cisco / ios_xe 17.10.1a 17.10.1a.x
cisco / ios_xe 17.10.1b 17.10.1b.x
cisco / ios_xe 17.8.1 17.8.1.x
cisco / ios_xe 17.8.1a 17.8.1a.x
cisco / ios_xe 17.9.1w 17.9.1w.x
cisco / ios_xe 17.9.2 17.9.2.x
cisco / ios_xe 17.9.1a 17.9.1a.x
cisco / ios_xe 17.9.1x 17.9.1x.x
cisco / ios_xe 17.9.1y 17.9.1y.x
cisco / ios_xe 17.9.3 17.9.3.x
cisco / ios_xe 17.9.2a 17.9.2a.x
cisco / ios_xe 17.9.1x1 17.9.1x1.x
cisco / ios_xe 17.9.3a 17.9.3a.x
cisco / ios_xe 17.11.1 17.11.1.x
cisco / ios_xe 17.11.1a 17.11.1a.x
cisco / ios_xe 17.11.99sw 17.11.99sw.x

Frequently Asked Questions

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.