CVE-2026-20311

medium Cisco
CVSS v3 Base Score
6.3
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.2%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: August 5, 2026 (32 days ago)
Last Modified: August 6, 2026
Vendor: Cisco
Source: NVD

Description

A vulnerability in the web-based management interface of Cisco IOS XE 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 insufficient error handling in the web-based management interface. An attacker could exploit this vulnerability by authenticating with a malformed certificate. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

CWE

CWE-126

References

🔗 sec.cloudapps.cisco.com