CVE-2026-20308CWE-269privilege-escalation

CVE-2026-20308

Medium · published August 5, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
23.7
In the wild
Unconfirmed
What it is

A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to perform a denial of service (DoS) attack against an affected device.

This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the web-based management interface to become unresponsive.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00320 · 23.7th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-05T21:16Z
References (1)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-dos-qdc7qx3 · [email protected]
EPSS history
Timeline
  • 05 AUG 16:19Z
    Cisco IOS XE Software Web-Based Management Interface Vulnerability
    cvelistv5