VulnerabilityAwaiting Analysis

CVE-2026-20231

This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-20231 are related to improper neutralization of special elements issues that are grouped…

CRITICAL 9.9EPSS 0.50%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-20231 are related to improper neutralization of special elements issues that are grouped under the Common Weakness Enumeration (CWE) CWE-74.

CVSS 3.1: 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.50% probability · 41th percentile
CISA KEV: Not listed
Weakness: CWE-74
Source: psirt@cisco.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.