CVE-2025-20327

HIGH

Cisco IOS Software - DoS

Title source: llm
STIX 2.1

Description

A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Scores

CVSS v3 7.7
EPSS 0.0017
EPSS Percentile 38.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-1287
Status published
Products (29)
Cisco/IOS 15.2(6)E2
Cisco/IOS 15.2(6)E2a
Cisco/IOS 15.2(6)E2b
Cisco/IOS 15.2(6)E3
Cisco/IOS 15.2(7)E
Cisco/IOS 15.2(7)E0a
Cisco/IOS 15.2(7)E0b
Cisco/IOS 15.2(7)E0s
Cisco/IOS 15.2(7)E1
Cisco/IOS 15.2(7)E10
... and 19 more
Published Sep 24, 2025
Tracked Since Feb 18, 2026