Vulnerability in Cisco Unified Computing System

CVE-2012-4074

The Board Management Controller (BMC) in the Serial over LAN (SoL) subsystem in Cisco Unified Computing System (UCS) relies on a hardcoded private key, which allows man-in-the-middle attackers to obtain sensitive information or modify the data stream by leveraging knowledge of this key, aka Bug ID CSCte90338.

Published 2013-09-20 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.012 (67.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Cisco Unified Computing System

Weakness classification (CWE)

CWE-255

References

www.securitytracker.com/id/1029073 (VDB Entry, Third Party Advisory, vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4074 (vendor-advisory, Vendor Advisory)