What is CVE-2026-20359?

CVE-2026-20359 is a critical-severity vulnerability in Cisco Crosswork Planning, classified under Insufficiently Protected Credentials. CVSS score: 9.9/10. Published 2026-08-19.

How severe is CVE-2026-20359?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Cisco Crosswork Planning

CVE-2026-20359

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 trackled by CVE-2026-20359 are related to insufficiently protected credentials issues that are grouped under the Common Weakness Enumeration (CWE) CWE-522.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Cisco Crosswork Planning — versions 7.0.0, 7.0.1, 7.0.2

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

Frequently asked questions

What is CVE-2026-20359?: CVE-2026-20359 is a critical-severity vulnerability in Cisco Crosswork Planning, classified under Insufficiently Protected Credentials. CVSS score: 9.9/10. Published 2026-08-19.
How severe is CVE-2026-20359?: Critical severity. CVSS v3 base score is 9.9 out of 10.