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9.8
CVE-2026-76485
cis · nx-os software

Cisco Nexus 3000 and 9000 Series Switches VXLAN OAM (NGOAM) Remote Code Execution Vulnerability

Description

A vulnerability in the VXLAN Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as NGOAM, could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a Denial-of-Service (DoS) on an affected device. This vulnerability is due to improper input validation of IP traffic when the NGOAM feature is enabled. An attacker could exploit this vulnerability by sending crafted packets to an IP interface on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes resulting in a reload and DoS condition.

Affected Products

VendorProductVersions
cisnx-os software9.2(3), 9.2(2v), 9.2(1), 9.2(2t), 9.2(3y), 9.3(2), 9.2(4), 9.3(1), 9.3(1z), 9.2(2), 9.3(3), 9.3(4), 9.3(5), 9.3(6), 9.3(5w), 9.3(7), 9.3(7k), 9.3(7a), 9.3(8), 9.3(9), 9.3(10), 10.3(1), 10.3(2), 9.3(11), 10.3(3), 9.3(12), 10.4(1), 10.3(99w), 10.3(3w), 10.3(99x), 10.3(3o), 10.3(4), 10.3(3p), 10.3(4a), 10.4(2), 10.3(3q), 9.3(13), 10.3(5), 10.4(3), 10.3(3x), 10.3(4g), 10.5(1), 10.3(3r), 10.3(6), 9.3(14), 10.4(4), 10.3(4h), 10.5(2), 10.3(7), 10.4(5), 10.5(3), 9.3(15), 10.4(4g), 10.5(4), 10.6(1), 10.5(3t), 10.3(8), 10.4(6), 10.5(3s), 10.5(3e), 10.5(3o), 9.3(16), 10.6(1s), 10.6(2), 10.5(3p), 10.3(9), 10.6(2s), 10.6(3), 10.4(7), 10.5(5), 9.3(17), 10.6(2n), 10.6(3s)

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
cisnx-oscert_advisory90%
cisnexuscert_advisory90%

References

  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ngoam-rce-LWKQ4BU

Related News (5 articles)

Tier E
Reddit r/cybersecurity5d ago
⚠️ Threat notice Cisco NX-OS Nexus 3000 and 9000 Switches
→ No new info (linked only)
Tier D
Heise Security12d ago
Sicherheitspatches: Kritische Root-Lücke bedroht Cisco-Switches
→ No new info (linked only)
Tier B
BSI Advisories13d ago
[NEU] [hoch] Cisco Nexus und Cisco NX-OS: Mehrere Schwachstellen
→ No new info (linked only)
Tier B
CERT-FR13d ago
Multiples vulnérabilités dans les produits Cisco (08 octobre 2026)
→ No new info (linked only)
Tier C
VulDB14d ago
CVE-2026-76485 | Cisco NX-OS up to 10.6(3s) NGOAM input validation
→ No new info (linked only)

Discussion (0)

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CVSS 3.19.8 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA KEV❌ No
Actively exploited❌ No
CWECWE-121
PublishedOct 7, 2026
Trending Score38
Source articles5
Independent5
Info Completeness0/14
Missing: cve_id, title, description, vendor, product, versions, cvss, epss, cwe, kev, exploit, patch, iocs, mitre_attack

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Oct 7, 2026
Discovered by ZDM
Oct 7, 2026