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TI-2019-01243 Aliases CVE-2019-1616GHSA-qfp2-rcgq-9rpw

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

Priority MEDIUM 48CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02437 84th percentileScored 2026-11-07
Fix Fixed MDS 9000 Series Multilayer Switches (Cisco): 6.2(25), 8.1(1b), 8.3(1)Nexus 3000 Series Switches (Cisco): 7.0(3)I4(9), 7.0(3)I7(4)+6 more products

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

VendorProductAffected versionsFixed inStatusSource
CiscoMDS 9000 Series Multilayer Switchesbefore 6.2(25); before 8.1(1b); before 8.3(1)6.2(25), 8.1(1b), 8.3(1)Patch availableCNA
CiscoNexus 3000 Series Switchesbefore 7.0(3)I4(9); before 7.0(3)I7(4)7.0(3)I4(9), 7.0(3)I7(4)Patch availableCNA
CiscoNexus 3500 Platform Switchesbefore 6.0(2)A8(10); before 7.0(3)I7(4)6.0(2)A8(10), 7.0(3)I7(4)Patch availableCNA
CiscoNexus 3600 Platform Switchesbefore 7.0(3)F3(5)7.0(3)F3(5)Patch availableCNA
CiscoNexus 7000 and 7700 Series Switchesbefore 6.2(22); before 8.2(3)6.2(22), 8.2(3)Patch availableCNA
CiscoNexus 9000 Series Switches in Standalone NX-OS Modebefore 7.0(3)I4(9); before 7.0(3)I7(4)7.0(3)I4(9), 7.0(3)I7(4)Patch availableCNA
CiscoNexus 9500 R-Series Line Cards and Fabric Modulesbefore 7.0(3)F3(5)7.0(3)F3(5)Patch availableCNA
CiscoUCS 6200, 6300, and 6400 Fabric Interconnectsbefore 3.2(3j); before 4.0(2a)3.2(3j), 4.0(2a)Patch availableCNA
  • MDS 9000 Series Multilayer Switches VendorCisco Affected before 6.2(25); before 8.1(1b); before 8.3(1) Fixed in 6.2(25), 8.1(1b), 8.3(1) Patch available CNA
  • Nexus 3000 Series Switches VendorCisco Affected before 7.0(3)I4(9); before 7.0(3)I7(4) Fixed in 7.0(3)I4(9), 7.0(3)I7(4) Patch available CNA
  • Nexus 3500 Platform Switches VendorCisco Affected before 6.0(2)A8(10); before 7.0(3)I7(4) Fixed in 6.0(2)A8(10), 7.0(3)I7(4) Patch available CNA
  • Nexus 3600 Platform Switches VendorCisco Affected before 7.0(3)F3(5) Fixed in 7.0(3)F3(5) Patch available CNA
  • Nexus 7000 and 7700 Series Switches VendorCisco Affected before 6.2(22); before 8.2(3) Fixed in 6.2(22), 8.2(3) Patch available CNA
  • Nexus 9000 Series Switches in Standalone NX-OS Mode VendorCisco Affected before 7.0(3)I4(9); before 7.0(3)I7(4) Fixed in 7.0(3)I4(9), 7.0(3)I7(4) Patch available CNA
  • Nexus 9500 R-Series Line Cards and Fabric Modules VendorCisco Affected before 7.0(3)F3(5) Fixed in 7.0(3)F3(5) Patch available CNA
  • UCS 6200, 6300, and 6400 Fabric Interconnects VendorCisco Affected before 3.2(3j); before 4.0(2a) Fixed in 3.2(3j), 4.0(2a) Patch available CNA

CPE configurations NVD · 19

CPEVersionsRoleVendor
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*8.2 to before 8.3\(1\)VulnerableCisco
cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\) to before 7.0\(3\)i7\(4\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\)i5 to before 7.0\(3\)i7\(4\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\)f3 to before 7.0\(3\)f3\(3c\)VulnerableCisco
cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.2 to before 8.2\(3\)VulnerableCisco
cpe:2.3:h:cisco:nexus_7000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 8.2 to before 8.3\(1\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\) to before 7.0\(3\)i7\(4\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i5 to before 7.0\(3\)i7\(4\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)f3 to before 7.0\(3\)f3\(3c\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_3600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.2 to before 8.2\(3\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_7000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 9 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:cisco:nexus_7700:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.0\(3\)f1 to before 7.0\(3\)f3\(3c\)VulnerableCisco
cpe:2.3:h:cisco:nexus_9500:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*7.3 to before 8.1\(1b\); 5.2 to before 6.2\(25\); 7.0\(3\)i4 to before 7.0\(3\)i4\(9\); 6.2 to before 6.2\(22\); before 6.2\(22\); before 7.0\(3\)i4\(9\); 6.0\(2\)a8 to before 6.0\(2\)a8\(10\); up to 6.0\(2\)a8; up to 7.0\(3\)i4; 4.0 to before 4.0\(2a\)VulnerableCisco
cpe:2.3:h:cisco:ucs_6200:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:ucs_6300:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:ucs_6400:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*before 3.2\(3j\)VulnerableCisco
  • cpe:2.3:h:cisco:nexus_7700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)f1 to before 7.0\(3\)f3\(3c\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:nexus_9500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.3 to before 8.1\(1b\); 5.2 to before 6.2\(25\); 7.0\(3\)i4 to before 7.0\(3\)i4\(9\); 6.2 to before 6.2\(22\); before 6.2\(22\); before 7.0\(3\)i4\(9\); 6.0\(2\)a8 to before 6.0\(2\)a8\(10\); up to 6.0\(2\)a8; up to 7.0\(3\)i4; 4.0 to before 4.0\(2a\) Vulnerable ·Cisco
  • cpe:2.3:h:cisco:ucs_6200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:ucs_6300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:ucs_6400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions before 3.2\(3j\) Vulnerable ·Cisco

Remediation

  • Fix · CNA MDS 9000 Series Multilayer Switches (Cisco) Fixed in 6.2(25), 8.1(1b), 8.3(1)
  • Fix · CNA Nexus 3000 Series Switches (Cisco) Fixed in 7.0(3)I4(9), 7.0(3)I7(4)
  • Fix · CNA Nexus 3500 Platform Switches (Cisco) Fixed in 6.0(2)A8(10), 7.0(3)I7(4)
  • Fix · CNA Nexus 3600 Platform Switches (Cisco) Fixed in 7.0(3)F3(5)
  • Fix · CNA Nexus 7000 and 7700 Series Switches (Cisco) Fixed in 6.2(22), 8.2(3)
  • Fix · CNA Nexus 9000 Series Switches in Standalone NX-OS Mode (Cisco) Fixed in 7.0(3)I4(9), 7.0(3)I7(4)
  • Fix · CNA Nexus 9500 R-Series Line Cards and Fabric Modules (Cisco) Fixed in 7.0(3)F3(5)
  • Fix · CNA UCS 6200, 6300, and 6400 Fabric Interconnects (Cisco) Fixed in 3.2(3j), 4.0(2a)

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Cisco Nexus 9500 R-Series Line Cards and Fabric Modules 7.0(3)F3(5)

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-01242 Cisco NX-OS Software Image Signature Verification VulnerabilityPriority LOW 31
    • TI-2019-01240 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)Priority LOW 30
    • TI-2019-01239 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)Priority LOW 30
    Show all 5 records →
  • Release ·

    Cisco Nexus 3600 Platform Switches 7.0(3)F3(5)

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2019-01240 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)Priority LOW 30
    • TI-2019-01239 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)Priority LOW 30
    • TI-2019-01238 Cisco FXOS and NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1611)Priority LOW 30
    Show all 4 records →
Show 2 more groups
  • Release ·

    Cisco Nexus 3000 Series Switches, Nexus 9000 Series Switches in Standalone NX-OS Mode 7.0(3)I4(9), 7.0(3)I7(4)

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2019-01241 Cisco NX-OS Software NX-API Command Injection VulnerabilityPriority MEDIUM 47
    • TI-2019-01239 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)Priority LOW 30
    Show all 3 records →
  • Release ·

    Cisco Nexus 7000 and 7700 Series Switches 6.2(22), 8.2(3)

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2019-01240 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)Priority LOW 30
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1616
  2. 2026-10-03 Alias added: GHSA-qfp2-rcgq-9rpw

References

Advisory 1

  • 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