A vulnerability in the Segment Routing over IPv6 (SRv6) Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as… (CVE-2026-76501)
Description
A critical vulnerability exists in the Segment Routing over IPv6 (SRv6) Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software. This flaw allows an unauthenticated remote attacker to execute arbitrary code with root privileges or cause a denial of service by sending crafted packets to an affected device. The issue arises from improper input validation of IP traffic when NGOAM and SRv6 features are enabled.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76501 is a critical vulnerability in Cisco NX-OS Software's SRv6 OAM (NGOAM) feature. It results from improper input validation of IP traffic, enabling an unauthenticated remote attacker to send specially crafted packets to an IP interface on the device. Successful exploitation can lead to arbitrary code execution with root privileges or cause process crashes that trigger device reloads and denial of service conditions.
Potential Impact
An attacker can remotely execute arbitrary code with root privileges on affected Cisco NX-OS devices or cause denial of service by crashing processes, leading to device reloads. This can severely impact device availability and control.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vxhc-whj8-6j78
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-76501"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac6bff12cdf04f656829077
Added to database: 10/07/2026, 21:56:01 UTC
Last enriched: 10/07/2026, 22:05:56 UTC
Last updated: 10/08/2026, 03:48:07 UTC
Views: 4
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