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

Weakness classification (CWE)

References

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.