CVE-2026-20358 — CRITICAL (10.0)

Vulnerability Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork 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-2026-20358 are related to external control of the file system issues that are grouped Common Weakness Enumeration (CWE) CWE-73.

CVSS Score

10.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-73

References

FAQ

What is CVE-2026-20358?

CVE-2026-20358 is a vulnerability with a CVSS score of 10.0 (CRITICAL). As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a ...

How severe is CVE-2026-20358?

CVE-2026-20358 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-20358?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.