Buffer overflow in Cisco Unified Computing System (Standalone)
CVE-2026-20097
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with admin-level privileges to execute arbitrary code as the root user. This vulnerability is due to improper validation of user-supplied input to the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system as the root user. Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Cisco Unified Computing System (Standalone) — versions 4.0(2g), 3.1(2i), 3.1(1d)
- Cisco Unified_computing_system — versions 3.1(1d), 3.1(2b), 3.1(2c)
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20097?
- CVE-2026-20097 is a medium-severity vulnerability in Cisco Unified Computing System (Standalone), classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2026-04-01.
- How severe is CVE-2026-20097?
- Medium severity. CVSS v3 base score is 6.5 out of 10.