CVE-2026-20308

MEDIUM CVSS 3.1: 4.3 EPSS 0.32%
Updated Aug 06, 2026
Cisco
Parameter Value
CVSS 4.3 (MEDIUM)
Type CWE-269 (Improper Privilege Management)
Vendor Cisco
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v3.1