TI-2019-01433 Aliases CVE-2019-1810 GHSA-3jwq-498g-6473

Improper signature verification in Cisco NX-OS Software

LOW 31CWE-347Published 2019-05-15 · Updated 2024-11-20

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.

Summary

A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability exists because software digital signatures are not properly verified during CLI command execution. An attacker could exploit this vulnerability to install an unsigned software image on an affected device. Note: If the device has not been patched for the vulnerability previously disclosed in the Cisco Security Advisory cisco-sa-20190306-nxos-sig-verif, a successful exploit could allow the attacker to boot a malicious software image.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00263 18th percentileScored 2026-11-07

Fix Fixed Cisco NX-OS Software (Cisco): 8.3(1)

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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	before 8.3(1)	8.3(1)	Patch available	CNA

Cisco NX-OS Software VendorCisco Affected before 8.3(1) Fixed in 8.3(1) Patch available CNA

CPE configurations NVD · 8

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:nx-os::::::::	6.1\(2\)i3\(4\) to before 7.0\(3\)i7\(5\); 7.0\(3\)i7\(5a\) to before 9.2\(2\)	Vulnerable	Cisco
cpe:2.3:h:cisco:n3k-c3164q:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:nx-os::::::::	7.0\(3\)i3\(1\) to before 7.0\(3\)i7\(1\); 7.0\(3\)i7\(2\) to before 9.2\(1\)	Vulnerable	Cisco
cpe:2.3:h:cisco:n3k-c3232c:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:nx-os::::::::	7.0\(3\)i4\(1\) to before 7.0\(3\)i7\(5\)	Vulnerable	Cisco
cpe:2.3:h:cisco:n9k-c92304qc:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:nx-os::::::::	7.0\(3\)i4\(2\) to before 7.0\(3\)i7\(5\)	Vulnerable	Cisco
cpe:2.3:h:cisco:n9k-c9232c:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 6.1\(2\)i3\(4\) to before 7.0\(3\)i7\(5\); 7.0\(3\)i7\(5a\) to before 9.2\(2\) Vulnerable ·Cisco
cpe:2.3:h:cisco:n3k-c3164q:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i3\(1\) to before 7.0\(3\)i7\(1\); 7.0\(3\)i7\(2\) to before 9.2\(1\) Vulnerable ·Cisco
cpe:2.3:h:cisco:n3k-c3232c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i4\(1\) to before 7.0\(3\)i7\(5\) Vulnerable ·Cisco
cpe:2.3:h:cisco:n9k-c92304qc:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions 7.0\(3\)i4\(2\) to before 7.0\(3\)i7\(5\) Vulnerable ·Cisco
cpe:2.3:h:cisco:n9k-c9232c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

Fix · CNA Cisco NX-OS Software (Cisco) Fixed in 8.3(1)

Fixed in the same release

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

Release · 2019-05-15
Cisco NX-OS Software 8.3(1)
18 records Highest priority Priority LOW 18 LOW
Other records, highest priority first
- TI-2019-01361 Cisco NX-OS Software Command Injection Vulnerability (CVE-2019-1735)Priority LOW 35
- TI-2019-01419 Cisco FXOS and NX-OS Software Command Injection VulnerabilityPriority LOW 32
- TI-2019-01416 Cisco NX-OS Software Command Injection VulnerabilityPriority LOW 32
Show all 18 records →

Timeline

2026-10-02 Threatist record created from CVE-2019-1810
2026-10-03 Alias added: GHSA-3jwq-498g-6473

References

Advisory 1

20190515 Cisco Nexus 3000 Series and 9000 Series Switches in NX-OS Mode CLI Command Software Image Signature Verification 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