CVE-2018-15370

Name: CVE-2018-15370
Creator: NVD / NIST
Published: 2018-10-05T14:29:06.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.36%

Last modified Jun 17, 2026

CVE-2018-15370 is a vulnerability of currently unknown severity. A vulnerability in Cisco IOS ROM Monitor (ROMMON) Software for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, local attacker to bypass Cisco Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to the presence of a hidden command in the affected software. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco IOS ROM Monitor (ROMMON) Software for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, local attacker to bypass Cisco Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to the presence of a hidden command in the affected software. An attacker could exploit this vulnerability by connecting to an affected device via the console, forcing the device into ROMMON mode, and writing a malicious pattern to a specific memory address on the device. A successful exploit could allow the attacker to bypass signature validation checks by Cisco Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.

Metrics

EPSS Probability

0.36%

27.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Cisco	Ios Rom Monitor	15.1\(2\)sy3

References

http://www.securityfocus.com/bid/105412Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-catalyst6800Vendor Advisory
http://www.securityfocus.com/bid/105412Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-catalyst6800Vendor Advisory

Timeline

Published: Oct 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-15370?

How severe is CVE-2018-15370?

Severity scoring for CVE-2018-15370 is pending analysis. The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2018-15370?

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-2018-15370?

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

Scan your code now

Source: NVD / NIST