Vulnerability Database

296,137

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: Jul 31, 2025
  • CVE: CVE-2024-20307
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

No CWE or OWASP classifications available.

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