CVE-2017-12331

Name: CVE-2017-12331
Creator: NVD / NIST
Published: 2017-11-30T09:29:00.37+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.23%

Last modified Jun 17, 2026

CVE-2017-12331 is a vulnerability of currently unknown severity. A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. An authenticated, local attacker could exploit this vulnerability to bypass signature verification and load a crafted, unsigned software patch on a targeted device. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655.

Metrics

EPSS Probability

0.23%

14.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Nx-Os	8.1\(1\)
Cisco	Unified Computing System	7.0\(0\)hsk\(0.357\)

References

http://www.securityfocus.com/bid/102159
http://www.securitytracker.com/id/1039930Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxosVendor Advisory
http://www.securityfocus.com/bid/102159
http://www.securitytracker.com/id/1039930Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxosVendor Advisory

Timeline

Published: Nov 30, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-12331?

How severe is CVE-2017-12331?

Severity scoring for CVE-2017-12331 is pending analysis. The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2017-12331?

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-2017-12331?

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

Scan your code now

Source: NVD / NIST