🛡️ CVE-2026-20125
🟠 CVSS 7.7 — High ✅ No Known Exploit CWE-228 NVD
7.7
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.7
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE CWE-228
Public Exploit ✅ No
Source NVD
Published 2026-03-25
Updated 2026-06-02
Modified 2026-03-26
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown

Similar Threats

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