Vulnerability Database

289,598

Total vulnerabilities in the database

CVE-2024-20436

A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to a null pointer dereference when accessing specific URLs. An attacker could exploit this vulnerability by sending crafted HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, causing a DoS condition on the affected device.

  • Published: Sep 25, 2024
  • Updated: May 4, 2025
  • CVE: CVE-2024-20436
  • 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

CWEs:

Software From Fixed in
cisco / ios_xe 3.13.2s 3.13.2s.x
cisco / ios_xe 3.10.6s 3.10.6s.x
cisco / ios_xe 3.13.6s 3.13.6s.x
cisco / ios_xe 3.14.4s 3.14.4s.x
cisco / ios_xe 3.15.1cs 3.15.1cs.x
cisco / ios_xe 3.13.4s 3.13.4s.x
cisco / ios_xe 16.2.1 16.2.1.x
cisco / ios_xe 3.13.0s 3.13.0s.x
cisco / ios_xe 3.17.3s 3.17.3s.x
cisco / ios_xe 3.16.0s 3.16.0s.x
cisco / ios_xe 3.14.1s 3.14.1s.x
cisco / ios_xe 3.12.2s 3.12.2s.x
cisco / ios_xe 3.10.5s 3.10.5s.x
cisco / ios_xe 3.10.8s 3.10.8s.x
cisco / ios_xe 3.9.0as 3.9.0as.x
cisco / ios_xe 3.10.1s 3.10.1s.x
cisco / ios_xe 3.10.2s 3.10.2s.x
cisco / ios_xe 3.18.2asp 3.18.2asp.x
cisco / ios_xe 3.16.2s 3.16.2s.x
cisco / ios_xe 3.9.2s 3.9.2s.x
cisco / ios_xe 3.16.0cs 3.16.0cs.x
cisco / ios_xe 3.13.5s 3.13.5s.x
cisco / ios_xe 3.11.2s 3.11.2s.x
cisco / ios_xe 3.15.0s 3.15.0s.x
cisco / ios_xe 3.14.3s 3.14.3s.x
cisco / ios_xe 16.6.1 16.6.1.x
cisco / ios_xe 3.17.4s 3.17.4s.x
cisco / ios_xe 3.17.2s 3.17.2s.x
cisco / ios_xe 3.11.3s 3.11.3s.x
cisco / ios_xe 3.15.3s 3.15.3s.x
cisco / ios_xe 3.10.2ts 3.10.2ts.x
cisco / ios_xe 3.10.3s 3.10.3s.x
cisco / ios_xe 3.16.6s 3.16.6s.x
cisco / ios_xe 3.14.0s 3.14.0s.x
cisco / ios_xe 3.16.5s 3.16.5s.x
cisco / ios_xe 3.10.7s 3.10.7s.x
cisco / ios_xe 3.11.0s 3.11.0s.x
cisco / ios_xe 3.9.1s 3.9.1s.x
cisco / ios_xe 3.15.1s 3.15.1s.x
cisco / ios_xe 3.10.0s 3.10.0s.x
cisco / ios_xe 3.17.0s 3.17.0s.x
cisco / ios_xe 3.16.4ds 3.16.4ds.x
cisco / ios_xe 3.16.3s 3.16.3s.x
cisco / ios_xe 3.17.1s 3.17.1s.x
cisco / ios_xe 3.15.2s 3.15.2s.x
cisco / ios_xe 3.10.8as 3.10.8as.x
cisco / ios_xe 16.4.1 16.4.1.x
cisco / ios_xe 3.14.2s 3.14.2s.x
cisco / ios_xe 3.15.4s 3.15.4s.x
cisco / ios_xe 3.16.1as 3.16.1as.x
cisco / ios_xe 3.12.0s 3.12.0s.x
cisco / ios_xe 3.12.1s 3.12.1s.x
cisco / ios_xe 3.12.4s 3.12.4s.x
cisco / ios_xe 16.2.2 16.2.2.x
cisco / ios_xe 3.16.4as 3.16.4as.x
cisco / ios_xe 3.13.3s 3.13.3s.x
cisco / ios_xe 3.13.6as 3.13.6as.x
cisco / ios_xe 3.16.4bs 3.16.4bs.x
cisco / ios_xe 3.11.4s 3.11.4s.x
cisco / ios_xe 3.12.3s 3.12.3s.x
cisco / ios_xe 16.3.1 16.3.1.x
cisco / ios_xe 3.13.1s 3.13.1s.x
cisco / ios_xe 3.10.4s 3.10.4s.x
cisco / ios_xe 3.11.1s 3.11.1s.x
cisco / ios_xe 3.13.8s 3.13.8s.x
cisco / ios_xe 16.3.1a 16.3.1a.x
cisco / ios_xe 16.3.2 16.3.2.x
cisco / ios_xe 16.3.3 16.3.3.x
cisco / ios_xe 3.16.6bs 3.16.6bs.x
cisco / ios_xe 16.5.1 16.5.1.x
cisco / ios_xe 3.13.7s 3.13.7s.x
cisco / ios_xe 3.10.9s 3.10.9s.x
cisco / ios_xe 16.3.4 16.3.4.x
cisco / ios_xe 16.5.1b 16.5.1b.x
cisco / ios_xe 16.4.2 16.4.2.x
cisco / ios_xe 3.13.9s 3.13.9s.x
cisco / ios_xe 16.3.6 16.3.6.x
cisco / ios_xe 16.6.3 16.6.3.x
cisco / ios_xe 16.8.1 16.8.1.x
cisco / ios_xe 16.7.1 16.7.1.x
cisco / ios_xe 16.6.2 16.6.2.x
cisco / ios_xe 16.9.1 16.9.1.x
cisco / ios_xe 16.3.5 16.3.5.x
cisco / ios_xe 16.5.2 16.5.2.x
cisco / ios_xe 16.8.1s 16.8.1s.x
cisco / ios_xe 16.8.2 16.8.2.x
cisco / ios_xe 16.7.2 16.7.2.x
cisco / ios_xe 16.7.3 16.7.3.x
cisco / ios_xe 16.4.3 16.4.3.x
cisco / ios_xe 16.9.1s 16.9.1s.x
cisco / ios_xe 3.16.7as 3.16.7as.x
cisco / ios_xe 3.16.7s 3.16.7s.x
cisco / ios_xe 3.16.7bs 3.16.7bs.x
cisco / ios_xe 16.5.3 16.5.3.x
cisco / ios_xe 16.3.7 16.3.7.x
cisco / ios_xe 16.3.8 16.3.8.x
cisco / ios_xe 3.13.10s 3.13.10s.x
cisco / ios_xe 3.10.10s 3.10.10s.x
cisco / ios_xe 16.6.4 16.6.4.x
cisco / ios_xe 3.16.8s 3.16.8s.x
cisco / ios_xe 16.10.1 16.10.1.x
cisco / ios_xe 16.9.2 16.9.2.x
cisco / ios_xe 3.16.10s 3.16.10s.x
cisco / ios_xe 16.12.1 16.12.1.x
cisco / ios_xe 16.6.5 16.6.5.x
cisco / ios_xe 16.11.1 16.11.1.x
cisco / ios_xe 17.1.1 17.1.1.x
cisco / ios_xe 16.11.1a 16.11.1a.x
cisco / ios_xe 16.12.1c 16.12.1c.x
cisco / ios_xe 16.11.2 16.11.2.x
cisco / ios_xe 16.12.1s 16.12.1s.x
cisco / ios_xe 16.12.1a 16.12.1a.x
cisco / ios_xe 16.11.1b 16.11.1b.x
cisco / ios_xe 16.11.1s 16.11.1s.x
cisco / ios_xe 16.10.1s 16.10.1s.x
cisco / ios_xe 3.16.9s 3.16.9s.x
cisco / ios_xe 16.6.6 16.6.6.x
cisco / ios_xe 16.3.9 16.3.9.x
cisco / ios_xe 16.10.1a 16.10.1a.x
cisco / ios_xe 16.10.2 16.10.2.x
cisco / ios_xe 16.9.3 16.9.3.x
cisco / ios_xe 16.10.1e 16.10.1e.x
cisco / ios_xe 16.10.1b 16.10.1b.x
cisco / ios_xe 16.8.3 16.8.3.x
cisco / ios_xe 16.9.4 16.9.4.x
cisco / ios_xe 16.12.2 16.12.2.x
cisco / ios_xe 16.6.7 16.6.7.x
cisco / ios_xe 16.10.3 16.10.3.x
cisco / ios_xe 16.12.4 16.12.4.x
cisco / ios_xe 16.12.8 16.12.8.x
cisco / ios_xe 16.3.10 16.3.10.x
cisco / ios_xe 16.9.5 16.9.5.x
cisco / ios_xe 16.6.8 16.6.8.x
cisco / ios_xe 16.12.3 16.12.3.x
cisco / ios_xe 17.2.1 17.2.1.x
cisco / ios_xe 17.4.1 17.4.1.x
cisco / ios_xe 16.6.9 16.6.9.x
cisco / ios_xe 17.1.1s 17.1.1s.x
cisco / ios_xe 16.12.2s 16.12.2s.x
cisco / ios_xe 17.1.1t 17.1.1t.x
cisco / ios_xe 16.3.11 16.3.11.x
cisco / ios_xe 17.2.1v 17.2.1v.x
cisco / ios_xe 16.12.3s 16.12.3s.x
cisco / ios_xe 17.2.1r 17.2.1r.x
cisco / ios_xe 16.12.4a 16.12.4a.x
cisco / ios_xe 17.1.3 17.1.3.x
cisco / ios_xe 17.2.2 17.2.2.x
cisco / ios_xe 17.3.1 17.3.1.x
cisco / ios_xe 17.4.1a 17.4.1a.x
cisco / ios_xe 17.3.2 17.3.2.x
cisco / ios_xe 17.4.1b 17.4.1b.x
cisco / ios_xe 17.3.1a 17.3.1a.x
cisco / ios_xe 17.2.3 17.2.3.x
cisco / ios_xe 16.9.6 16.9.6.x
cisco / ios_xe 16.12.5 16.12.5.x
cisco / ios_xe 17.5.1 17.5.1.x
cisco / ios_xe 17.3.3 17.3.3.x
cisco / ios_xe 16.9.7 16.9.7.x
cisco / ios_xe 17.5.1a 17.5.1a.x
cisco / ios_xe 17.6.1 17.6.1.x
cisco / ios_xe 17.3.4a 17.3.4a.x
cisco / ios_xe 17.4.2 17.4.2.x
cisco / ios_xe 17.6.1a 17.6.1a.x
cisco / ios_xe 16.6.10 16.6.10.x
cisco / ios_xe 16.9.8 16.9.8.x
cisco / ios_xe 17.3.4 17.3.4.x
cisco / ios_xe 16.12.6 16.12.6.x
cisco / ios_xe 17.6.3 17.6.3.x
cisco / ios_xe 17.9.1 17.9.1.x
cisco / ios_xe 16.12.7 16.12.7.x
cisco / ios_xe 17.3.5 17.3.5.x
cisco / ios_xe 17.6.2 17.6.2.x
cisco / ios_xe 17.6.3a 17.6.3a.x
cisco / ios_xe 17.7.1 17.7.1.x
cisco / ios_xe 17.7.1a 17.7.1a.x
cisco / ios_xe 17.7.2 17.7.2.x
cisco / ios_xe 17.8.1 17.8.1.x
cisco / ios_xe 17.8.1a 17.8.1a.x
cisco / ios_xe 17.11.1 17.11.1.x
cisco / ios_xe 17.10.1 17.10.1.x
cisco / ios_xe 17.3.6 17.3.6.x
cisco / ios_xe 17.6.4 17.6.4.x
cisco / ios_xe 17.9.1a 17.9.1a.x
cisco / ios_xe 17.3.7 17.3.7.x
cisco / ios_xe 17.6.5 17.6.5.x
cisco / ios_xe 17.10.1a 17.10.1a.x
cisco / ios_xe 17.10.1b 17.10.1b.x
cisco / ios_xe 17.9.2 17.9.2.x
cisco / ios_xe 17.9.3 17.9.3.x
cisco / ios_xe 17.9.2a 17.9.2a.x
cisco / ios_xe 17.9.3a 17.9.3a.x
cisco / ios_xe 17.11.1a 17.11.1a.x
cisco / ios_xe 17.6.5a 17.6.5a.x
cisco / ios_xe 17.12.1a 17.12.1a.x
cisco / ios_xe 17.12.1 17.12.1.x
cisco / ios_xe 17.9.4a 17.9.4a.x
cisco / ios_xe 17.9.4 17.9.4.x
cisco / ios_xe 17.6.6a 17.6.6a.x
cisco / ios_xe 17.6.6 17.6.6.x
cisco / ios_xe 17.3.8a 17.3.8a.x
cisco / ios_xe 17.3.8 17.3.8.x