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Vulnerabilities CVE-2026-20272

CVE-2026-20272

Critical
Open
TLP:CLEAR

Cisco IOS XE Software Security Hardening Release

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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-2026-20272 are related to issues with improper neutralization of special elements that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-74.

Details

CVSS Score
9.8
EPSS Score
0.34%

27.2th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Aug 5, 2026
Last Modified
Aug 6, 2026
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