Cisco NX-OS on the Nexus 1000V does not assign the proper priority to heartbeat messages…
Priority LOW 26CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Cisco NX-OS on the Nexus 1000V does not assign the proper priority to heartbeat messages from a Virtual Ethernet Module (VEM) to a Virtual Supervisor Module (VSM), which allows remote attackers to cause a denial of service (false VEM unavailability report) via a flood of UDP packets, aka Bug ID CSCud14840.
Why it matters now
EPSS 0.01753 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2013-1213
- 2026-10-03 Alias added: GHSA-fwr7-4g5r-h48g
References
More Cisco Nexus 1000v vulnerabilities
- TI-2013-01024 Multiple buffer overflows in the Cisco Discovery Protocol (CDP) implementation in Cisco… CVSS 2.0HIGH 8.3
- TI-2012-00326 Cisco NX-OS 4.2.x before 4.2(1)SV1(5.1) on Nexus 1000v series switches; 4.x and 5.0.x… CVSS 2.0HIGH 7.8
- TI-2013-04749 The license-installation module on the Cisco Nexus 1000V switch 4.2(1)SV1(5.2b) and… CVSS 2.0MEDIUM 6.8
- TI-2013-02967 The license-installation module in Cisco NX-OS on Nexus 1000V devices allows local users… CVSS 2.0MEDIUM 6.8
- TI-2015-00723 The banner (aka MOTD) implementation in Cisco NX-OS 4.1(2)E1(1f) on Nexus 4000 devices… CVSS 2.0MEDIUM 5.0
- TI-2013-01055 The SSL functionality in Cisco NX-OS on the Nexus 1000V does not properly verify X.509… CVSS 2.0MEDIUM 5.8
Sources
- CVE-2013-1213 · CVE Program
- CVE-2013-1213 · NVD
- FIRST EPSS
- GHSA-fwr7-4g5r-h48g · GitHub Advisory Database · CC BY 4.0
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