TI-2024-13304 Aliases CVE-2024-20371 GHSA-q7hr-x75r-2mp7

Cisco Nexus 3550-F Switches Access Control List Programming Vulnerability

LOW 30CWE-264Published 2024-11-06 · Updated 2024-11-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-264.

Summary

A vulnerability in the access control list (ACL) programming of Cisco Nexus 3550-F Switches could allow an unauthenticated, remote attacker to send traffic that should be blocked to the management interface of an affected device.  This vulnerability exists because ACL deny rules are not properly enforced at the time of device reboot. An attacker could exploit this vulnerability by attempting to send traffic to the management interface of an affected device. A successful exploit could allow the attacker to send traffic to the management interface of the affected device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00458 39th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Nexus 3550 System Software	3550-F_1.11.3; 3550-F_1.12.0; 3550-F_1.16.0; 3550-F_1.17.1; 3550-F_1.11.1; 3550-F_1.11.2; 3550-F_1.15.0; 3550-F_1.13.0; 3550-F_1.14.0	—	No fix listed	CNA

Cisco Nexus 3550 System Software VendorCisco Affected 3550-F_1.11.3; 3550-F_1.12.0; 3550-F_1.16.0; 3550-F_1.17.1; 3550-F_1.11.1; 3550-F_1.11.2; 3550-F_1.15.0; 3550-F_1.13.0; 3550-F_1.14.0 Fixed in — No fix listed CNA

CPE names CISA-ADP · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:nexus_3550_firmware::::::::	—	—	Cisco

cpe:2.3:o:cisco:nexus_3550_firmware:*:*:*:*:*:*:*:* Versions — — ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-20371
2026-10-03 Alias added: GHSA-q7hr-x75r-2mp7

References

Other 1

cisco-sa-3550-acl-bypass-mhskZc2q

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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences