What is CVE-2026-20312?

CVE-2026-20312 is a high-severity vulnerability in Cisco Catalyst Sd-wan Controller, classified under Cleartext Storage of Sensitive Information. CVSS score: 8.8/10. Published 2026-08-05.

How severe is CVE-2026-20312?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Cisco Catalyst Sd-wan Controller

CVE-2026-20312

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that ad…

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Catalyst Sd-wan Controller — versions 20.6.4, 20.9.2, 20.3.6
Cisco Catalyst Sd-wan Manager — versions 20.1.12, 19.2.1, 18.4.4

Weakness classification (CWE)

CWE-312 — Cleartext Storage of Sensitive Information

References

psirt@cisco.com

Frequently asked questions

What is CVE-2026-20312?: CVE-2026-20312 is a high-severity vulnerability in Cisco Catalyst Sd-wan Controller, classified under Cleartext Storage of Sensitive Information. CVSS score: 8.8/10. Published 2026-08-05.
How severe is CVE-2026-20312?: High severity. CVSS v3 base score is 8.8 out of 10.