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CVE-2026-20288

MEDIUMCVSS 6.5/10EPSS 0.38%

Last modified

CVE-2026-20288 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands 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.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
0.38%

31.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoUnified Computing System3.1\(1d\)
CiscoUnified Computing System3.1\(2b\)
CiscoUnified Computing System3.1\(2c\)
CiscoUnified Computing System3.1\(2d\)
CiscoUnified Computing System3.1\(2e\)
CiscoUnified Computing System3.1\(2g\)
CiscoUnified Computing System3.1\(2i\)
CiscoUnified Computing System3.1\(3a\)
CiscoUnified Computing System3.1\(3b\)
CiscoUnified Computing System3.1\(3c\)
CiscoUnified Computing System3.1\(3d\)
CiscoUnified Computing System3.1\(3g\)
CiscoUnified Computing System3.1\(3h\)
CiscoUnified Computing System3.1\(3i\)
CiscoUnified Computing System3.1\(3j\)
CiscoUnified Computing System3.1\(3k\)
CiscoUnified Computing System4.0\(1.240\)
CiscoUnified Computing System4.0\(1a\)
CiscoUnified Computing System4.0\(1b\)
CiscoUnified Computing System4.0\(1c\)
CiscoUnified Computing System4.0\(1d\)
CiscoUnified Computing System4.0\(1e\)
CiscoUnified Computing System4.0\(1g\)
CiscoUnified Computing System4.0\(1h\)
CiscoUnified Computing System4.0\(2c\)
CiscoUnified Computing System4.0\(2d\)
CiscoUnified Computing System4.0\(2f\)
CiscoUnified Computing System4.0\(2g\)
CiscoUnified Computing System4.0\(2h\)
CiscoUnified Computing System4.0\(2i\)
CiscoUnified Computing System4.0\(2k\)
CiscoUnified Computing System4.0\(2l\)
CiscoUnified Computing System4.0\(2m\)
CiscoUnified Computing System4.0\(2n\)
CiscoUnified Computing System4.0\(2o\)
CiscoUnified Computing System4.0\(2p\)
CiscoUnified Computing System4.0\(2q\)
CiscoUnified Computing System4.0\(2r\)
CiscoUnified Computing System4.0\(4b\)
CiscoUnified Computing System4.0\(4c\)
CiscoUnified Computing System4.0\(4d\)
CiscoUnified Computing System4.0\(4e\)
CiscoUnified Computing System4.0\(4f\)
CiscoUnified Computing System4.0\(4h\)
CiscoUnified Computing System4.0\(4i\)
CiscoUnified Computing System4.0\(4j\)
CiscoUnified Computing System4.0\(4k\)
CiscoUnified Computing System4.0\(4l\)
CiscoUnified Computing System4.0\(4m\)
CiscoUnified Computing System4.0\(4n\)

Showing 50 of 185 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-20288?
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands 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.
How severe is CVE-2026-20288?
CVE-2026-20288 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20288?
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.

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Source: NVD / NIST