CVE-2026-20280: Improper Check or Handling of Exceptional Conditions in Cisco Cisco IOS XR Software
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-2026-20280 are related to improper checking or handling of exceptional condition issues that are grouped under the Common Weakness Enumeration (CWE) CWE-703.
CVSS v3.1
Score 8.8high
Affected software
Cisco
Cisco IOS XR Software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Cisco IOS XR Software contains multiple internally discovered vulnerabilities related to improper checking or handling of exceptional conditions (CWE-703). These issues were identified during an internal security review and are tracked under CVE-2026-20280. The vulnerability affects numerous specific versions of Cisco IOS XR Software, potentially allowing attackers to compromise confidentiality, integrity, and availability of the affected systems. The CVSS v3.1 base score is 8.8, with attack vector network, low attack complexity, low privileges required, no user interaction, and impacts rated high for confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could result in complete compromise of affected Cisco IOS XR devices, impacting confidentiality, integrity, and availability. This could allow attackers to disrupt network operations or gain unauthorized access to sensitive information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no vendor advisory or patch links are provided, users should monitor Cisco's official security advisories for updates and apply any released patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.403Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9850dcacd9273b4977c51d
Added to database: 09/02/2026, 16:37:48 UTC
Last enriched: 09/22/2026, 03:20:16 UTC
Last updated: 10/15/2026, 18:48:18 UTC
Views: 85
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.