CVE-2019-1808

Name: CVE-2019-1808
Creator: NVD / NIST
Published: 2019-05-15T23:29:01.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2019-1808 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by loading an unsigned software patch on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.18%

8.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Nx-Os	>= 7.3, < 8.1\(1a\)
Cisco	Nx-Os	>= 8.2, < 8.3\(1\)
Cisco	Nx-Os	>= 7.2, < 7.3\(3\)d1\(1\)
Cisco	Nx-Os	>= 8.0, < 8.2\(3\)

References

http://www.securityfocus.com/bid/108367Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-spsvVendor Advisory
http://www.securityfocus.com/bid/108367Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-spsvVendor Advisory

Timeline

Published: May 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-1808?

How severe is CVE-2019-1808?

CVE-2019-1808 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2019-1808?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1808?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST