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CVE Record

CVE-2018-15370: Cisco Catalyst 6800 Series Switches ROM Monitor Software Secure Boot Bypass Vulnerability

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This flaw affects Cisco Catalyst 6800 Series switches and could let someone with local console access bypass Secure Boot checks. If abused, the device could run a Cisco-unsigned software image, undermining trust in the switch. The business risk is highest where attackers could physically or administratively reach console access. Exposure is limited to Cisco Catalyst 6800 Series switches with affected ROMMON software. Internet-facing exposure is not indicated. Practical risk depends on physical security, console access controls, maintenance workflows, and whether device images are tightly controlled. Treat this as a targeted infrastructure integrity risk, not a remote mass-exploitation issue. Prioritize environments where Catalyst 6800 switches support critical networks or where console access could be reached by contractors, shared facilities, or weakly controlled operations staff. Mitigation focus: Review Cisco’s advisory for affected releases and remediation guidance.; Restrict and monitor physical and console access to Catalyst 6800 devices.; Use only Cisco-signed software images from trusted sources..

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Potential ATT&CK relevance

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CVE-2018-15370 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CiscoCisco Catalyst 6800 Series Switchesn/aListed
Weakness

CWE details

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Permissions, Privileges, and Access Controls

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