7.7
High
CVE-2026-20125 A vulnerability in the HTTP Server feature of Cisco IOS Software and Cisco IOS XE Software Release 3E could allow an…
Description
A vulnerability in the HTTP Server feature of Cisco IOS Software and Cisco IOS XE Software Release 3E could allow an authenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending malformed HTTP requests to an affected device. A successful exploit could allow the attacker to cause a watchdog timer to expire and the device to reload, resulting in a DoS condition. To exploit this vulnerability, the attacker must have a valid user account.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| IOS | Versions not published | |
| Cisco IOS XE Software 3.18 | 3.18.0S → 3.18.9SP | No fix stated |
| Cisco IOS XE Software 3.17 | 3.17.0S → 3.17.4S | No fix stated |
| Cisco IOS XE Software 3.16 | 3.16.0S → 3.16.10S | No fix stated |
| Cisco IOS XE Software 3.15 | 3.15.0S → 3.15.4S | No fix stated |
| Cisco IOS XE Software 3.14 | 3.14.0S → 3.14.4S | No fix stated |
| Cisco IOS XE Software 3.13 | 3.13.0S → 3.13.10S | No fix stated |
| Cisco IOS XE Software 3.12 | 3.12.0S → 3.12.4S | No fix stated |
| Cisco IOS XE Software 3.11 | 3.11.0S → 3.11.13E | No fix stated |
Show the 6 other branches Hide the 6 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XE Software 3.10 | 3.10.0E → 3.10.3E | No fix stated |
| Cisco IOS XE Software 3.9 | 3.9.0E → 3.9.2E | No fix stated |
| Cisco IOS XE Software 3.8 | 3.8.0E → 3.8.10E | No fix stated |
| Cisco IOS XE Software 3.7 | 3.7.0E → 3.7.5E | No fix stated |
| Cisco IOS XE Software 3.6 | 3.6.0E → 3.6.10E | No fix stated |
| Cisco IOS XE Software 3.5 | 3.5.0E → 3.5.8SQ | No fix stated |
References
- cisco-sa-ios-http-dos-sbv8XRpL sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
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