Cisco NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

Description

A vulnerability in the Cisco Fabric Services component of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a buffer overflow, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow, resulting in process crashes and a DoS condition on the device. MDS 9000 Series Multilayer Switches are affected running software versions prior to 6.2(25), 8.1(1b), 8.3(1). Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected running software versions prior to 6.0(2)A8(10) and 7.0(3)I7(4). Nexus 3600 Platform Switches are affected running software versions prior to 7.0(3)F3(5) Nexus 7000 and 7700 Series Switches are affected running software versions prior to 6.2(22) and 8.2(3). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected running software versions prior to 7.0(3)F3(5). UCS 6200, 6300, and 6400 Fabric Interconnects are affected running software versions prior to 3.2(3j) and 4.0(2a).

Timeline

Scores

EPSS (exploitation in 30 days)

2.4% · top 15% of all CVEs (12 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Affected products

• Cisco · MDS 9000 Series Multilayer Switches

  • affected unspecified – < 6.2(25)
  • affected unspecified – < 8.1(1b)
  • affected unspecified – < 8.3(1)

• Cisco · Nexus 3000 Series Switches

  • affected unspecified – < 7.0(3)I4(9)
  • affected unspecified – < 7.0(3)I7(4)

• Cisco · Nexus 3500 Platform Switches

  • affected unspecified – < 6.0(2)A8(10)
  • affected unspecified – < 7.0(3)I7(4)

• Cisco · Nexus 3600 Platform Switches

  • affected unspecified – < 7.0(3)F3(5)

• Cisco · Nexus 7000 and 7700 Series Switches

  • affected unspecified – < 6.2(22)
  • affected unspecified – < 8.2(3)

• Cisco · Nexus 9000 Series Switches in Standalone NX-OS Mode

  • affected unspecified – < 7.0(3)I4(9)
  • affected unspecified – < 7.0(3)I7(4)

• Cisco · Nexus 9500 R-Series Line Cards and Fabric Modules

  • affected unspecified – < 7.0(3)F3(5)

• Cisco · UCS 6200, 6300, and 6400 Fabric Interconnects

  • affected unspecified – < 3.2(3j)
  • affected unspecified – < 4.0(2a)

What to do

Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2019-10173 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-1616](https://cveledger.app/badge/CVE-2019-1616.svg)](https://cveledger.app/cve/CVE-2019-1616)

Record last updated 19 Nov 2024, 19:15 UTC.