TI-2019-01222 Aliases CVE-2019-1595 GHSA-6m2h-jq7c-rvm8

Cisco Nexus 5600 and 6000 Series Switches Fibre Channel over Ethernet Denial of Service Vulnerability

LOW 33CWE-913Published 2019-03-06 · Updated 2024-11-21

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

A vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an incorrect allocation of an internal interface index. An adjacent attacker with the ability to submit a crafted FCoE packet that crosses affected interfaces could trigger this vulnerability. A successful exploit could allow the attacker to cause a packet loop and high throughput on the affected interfaces, resulting in a DoS condition. This vulnerability has been fixed in version 7.3(5)N1(1).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00646 51st 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: No
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 NX-OS Software	7.3(5)N1(1)	—	No fix listed	CNA

Cisco NX-OS Software VendorCisco Affected 7.3(5)N1(1) Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:nx-os::::::::	before 7.3\(5\)n1\(1\)	Vulnerable	Cisco
cpe:2.3:h:cisco:nexus_5600:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:nexus_6000:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions before 7.3\(5\)n1\(1\) Vulnerable ·Cisco
cpe:2.3:h:cisco:nexus_5600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:nexus_6000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-1595
2026-10-03 Alias added: GHSA-6m2h-jq7c-rvm8
2026-10-19 EPSS moved to the 50th–90th percentile

References

Patch 1

20190306 Cisco Nexus 5600 and 6000 Series Switches Fibre Channel over Ethernet Denial of Service Vulnerability

TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
TI-2024-13332 Cisco NX-OS Software CLI Command Injection Vulnerability KEVCVSS 3.1MEDIUM 6.7
TI-2018-00260 Improper input validation in Cisco NX-OS unknown CVSS 3.0CRITICAL 9.8
TI-2019-01226 Cisco NX-OS Software Netstack Denial of Service Vulnerability CVSS 3.1HIGH 8.6
TI-2022-05183 Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability CVSS 3.1HIGH 8.6
TI-2022-05182 Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability CVSS 3.1HIGH 8.6

See all 274 →

Sources

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