CVE WatchAug 5, 2026

CVE-2026-20271

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a

CVSS

8.6

High

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 5, 2026 · Last modified: Aug 5, 2026 · CWE-691

EPSS · 30d

Not enough EPSS history yet.

Technical description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software 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-2026-20271 are related to insufficient control flow management issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-691.  

Official references

sec.cloudapps.cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxe-V8NMuMZJ

Related CVEs

No related CVEs by CWE or product.