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-2026-20267 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00228.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco IOS XE Software unknown
Version Status Constraints
17.2.1a affected —
16.12.1y affected —
16.12.3s affected —
16.7.1b affected —
16.6.2 affected —
16.6.5 affected —
16.12.1w affected —
16.9.1d affected —
17.3.1 affected —
16.9.4c affected —
16.7.1 affected —
17.2.1 affected —
16.6.8 affected —
16.9.1b affected —
16.9.2s affected —
16.12.4 affected —
16.12.3a affected —
17.1.1s affected —
16.11.1a affected —
16.7.2 affected —
16.11.1b affected —
16.9.1s affected —
16.9.3h affected —
16.9.1c affected —
16.6.5a affected —
16.6.3 affected —
16.10.1f affected —
17.2.1v affected —
16.8.1e affected —
16.9.3a affected —
16.12.1a affected —
16.12.1x affected —
16.6.4s affected —
16.10.1c affected —
16.12.3 affected —
16.11.2 affected —
16.6.5b affected —
16.12.2s affected —
16.10.1b affected —
16.7.3 affected —
16.6.7 affected —
16.9.6 affected —
16.9.2 affected —
16.10.1 affected —
16.12.1t affected —
16.9.1 affected —
16.8.1a affected —
16.9.3s affected —
16.6.7a affected —
16.12.2 affected —
16.11.1 affected —
16.9.3 affected —
16.11.1s affected —
16.12.1 affected —
17.1.1 affected —
17.1.2 affected —
16.10.1d affected —
17.1.1t affected —
16.9.4 affected —
16.8.3 affected —
16.12.2t affected —
16.9.5 affected —
16.8.1s affected —
16.10.1e affected —
16.8.2 affected —
16.6.4 affected —
16.8.1b affected —
16.10.1a affected —
16.12.1z affected —
16.8.1c affected —
16.9.1a affected —
16.9.5f affected —
16.6.4a affected —
16.10.1g affected —
16.8.1 affected —
16.6.6 affected —
16.9.2a affected —
16.8.1d affected —
16.10.3 affected —
16.7.1a affected —
16.11.1c affected —
16.10.1s affected —
17.2.1r affected —
17.1.1a affected —
16.10.2 affected —
16.12.2a affected —
16.12.1c affected —
16.12.1s affected —
16.7.4 affected —
17.2.2 affected —
16.9.8 affected —
16.9.7 affected —
17.1.3 affected —
17.3.1a affected —
17.3.2a affected —
16.12.5 affected —
17.3.1w affected —
17.3.2 affected —
17.4.1 affected —
16.12.4a affected —
17.4.1a affected —
17.3.1x affected —
17.3.3 affected —
16.6.9 affected —
17.2.3 affected —
17.5.1 affected —
16.12.1z1 affected —
16.12.5a affected —
17.4.1b affected —
17.3.1z affected —
16.12.5b affected —
17.4.2 affected —
17.3.3a affected —
17.3.5 affected —
17.3.4 affected —
17.5.1a affected —
16.12.6 affected —
17.6.1 affected —
16.12.1z2 affected —
16.6.10 affected —
17.3.4a affected —
17.6.1a affected —
17.7.1 affected —
17.6.1x affected —
17.6.2 affected —
16.12.6a affected —
17.3.4c affected —
17.4.2a affected —
17.3.4b affected —
17.7.1a affected —
16.12.7 affected —
17.8.1a affected —
17.6.3a affected —
17.6.3 affected —
17.7.2 affected —
17.7.1b affected —
17.9.1w affected —
17.3.5a affected —
17.6.1z affected —
16.12.8 affected —
17.8.1 affected —
17.9.1 affected —
17.6.4 affected —
17.3.5b affected —
17.9.1a affected —
17.3.6 affected —
17.10.1 affected —
16.9.8a affected —
17.6.1z1 affected —
17.10.1a affected —
17.9.2 affected —
17.6.5 affected —
17.9.1x affected —
17.9.1y affected —
16.9.8b affected —
17.3.7 affected —
17.9.2a affected —
17.9.3 affected —
16.12.9 affected —
17.11.1 affected —
17.10.1b affected —
17.6.6 affected —
17.9.1x1 affected —
17.11.1a affected —
17.9.3a affected —
17.12.1 affected —
17.3.8 affected —
17.9.4 affected —
16.12.10 affected —
17.12.1w affected —
17.9.1y1 affected —
17.12.1a affected —
17.9.5 affected —
17.13.1 affected —
17.12.1x affected —
17.12.2 affected —
17.14.1 affected —
17.9.4a affected —
17.3.8a affected —
17.6.6a affected —
17.6.5a affected —
17.6.7 affected —
16.12.10a affected —
17.15.1 affected —
17.13.1a affected —
17.12.2a affected —
16.12.11 affected —
17.12.3 affected —
17.12.1y affected —
17.12.1z affected —
17.9.5a affected —
17.14.1a affected —
17.9.5b affected —
17.6.8 affected —
16.12.12 affected —
17.12.4 affected —
17.9.6 affected —
17.17.1 affected —
17.16.1 affected —
17.15.1w affected —
17.12.3a affected —
17.9.5c affected —
17.15.1a affected —
17.12.1z1 affected —
17.15.2 affected —
17.15.1b affected —
17.9.5d affected —
17.15.1x affected —
17.9.6a affected —
17.12.1z2 affected —
17.6.8a affected —
17.16.1a affected —
16.12.13 affected —
17.15.3 affected —
17.9.7 affected —
17.12.5 affected —
17.15.1y affected —
17.9.5e affected —
17.12.4a affected —
17.15.2a affected —
17.15.2c affected —
17.15.2b affected —
17.12.1z3 affected —
17.9.5f affected —
17.12.4b affected —
17.12.5a affected —
17.18.1 affected —
17.12.6 affected —
17.12.1z4 affected —
17.9.8 affected —
17.9.7a affected —
17.15.3a affected —
17.15.4 affected —
17.12.5b affected —
17.15.3b affected —
16.12.14 affected —
17.18.1z affected —
17.9.7b affected —
17.12.5c affected —
26.1.1 affected —
17.18.1a affected —
17.15.4a affected —
17.18.2 affected —
17.18.1w affected —
17.15.4b affected —
17.12.6a affected —
17.12.7 affected —
17.15.4c affected —
17.9.9 affected —
17.12.5d affected —
16.12.15 affected —
17.15.4s1 affected —
17.15.5 affected —
17.12.1z5 affected —
17.18.1x affected —
17.12.1z6 affected —
17.15.4d affected —
17.12.6b affected —
17.4.1c affected —
17.15.5a affected —
17.18.1y affected —
17.12.7a affected —
17.18.3 affected —
17.12.7b affected —
17.18.3a affected —
26.1.1a affected —
17.15.7 affected —
16.12.16 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
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Project Subscriptions

Vendors Products
Cisco Subscribe
Ios Xe Software Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxe-V8NMuMZJ cve-icon
History

Fri, 07 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco ios Xe Software
Vendors & Products Cisco
Cisco ios Xe Software

Wed, 05 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 05 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
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-2026-20267 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.
Title Cisco IOS XE Software Security Hardening Release
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-08-06T03:55:44.993Z

Reserved: 2025-10-08T11:59:15.402Z

Link: CVE-2026-20267

cve-icon Vulnrichment

Updated: 2026-08-05T17:39:24.138Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-07T09:15:07Z

Weaknesses