What is CVE-2026-20358?

CVE-2026-20358 is a critical-severity vulnerability in Cisco Crosswork Planning, classified under External Control of File Name or Path. CVSS score: 10.0/10. Published 2026-08-19.

How severe is CVE-2026-20358?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Cisco Crosswork Planning

CVE-2026-20358

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 v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H.

Affected products

Cisco Crosswork Planning — versions 7.0.0, 7.0.1, 7.0.2

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

Frequently asked questions

What is CVE-2026-20358?: CVE-2026-20358 is a critical-severity vulnerability in Cisco Crosswork Planning, classified under External Control of File Name or Path. CVSS score: 10.0/10. Published 2026-08-19.
How severe is CVE-2026-20358?: Critical severity. CVSS v3 base score is 10.0 out of 10.