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CVE-2026-20312

HighPublished

Cisco Catalyst SD-WAN Security Hardening Release - Information Disclosure Vulnerabilities

Published: Aug 5, 2026
Updated: Aug 14, 2026
Assigning CNA: cisco
Evidence observed: Aug 27, 2026

Primary CVSS

8.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 18.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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 address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20312 are related to Cleartext storage of sensitive information issues that are grouped under the Common Weakness Enumeration (CWE) CWE-312.

Sources

Cisco-CVE-2026-20303-MorePoC
CVE-2026-20303, CVE-2026-20304, CVE-2026-20310, CVE-2026-20312, CVE-2026-20313

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