The vulnerabilities tracked by CVE-2026-20277 are related to protection mechanism failure issues that are grouped under the Common Weakness Enumeration (CWE) CWE-693.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Cisco | Cisco IOS XR Software | unknown |
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No data available yet.
No vendor fix or workaround currently provided.
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Tracking
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Wed, 02 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20277 are related to protection mechanism failure issues that are grouped under the Common Weakness Enumeration (CWE) CWE-693. | |
| Title | Cisco IOS XR Software Security Hardening Release: September 2026 | |
| Weaknesses | CWE-693 | |
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| Metrics |
cvssV3_1
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-09-02T17:58:59.278Z
Reserved: 2025-10-08T11:59:15.403Z
Link: CVE-2026-20277
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-02T17:17:33.110
Modified: 2026-09-02T17:17:33.110
Link: CVE-2026-20277
Redhat
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OpenCVE Enrichment
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CWE-693
Protection Mechanism Failure