CVE-2026-20099
Last modified
CVE-2026-20099 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. EPSS estimates a 0.64% chance of exploitation in the next 30 days.
Description
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of the affected device with root-level privileges.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-20099?
How severe is CVE-2026-20099?
How do I fix CVE-2026-20099?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-20093A vulnerability in the change password functionality of Cisc…9.8
- CVE-2026-20094A vulnerability in the web-based management interface of Cis…8.8
- CVE-2026-20095A vulnerability in the web-based management interface of Cis…6.5
- CVE-2026-20096A vulnerability in the web-based management interface of Cis…6.5
- CVE-2026-20097A vulnerability in the web-based management interface of Cis…6.5
- CVE-2026-20098A vulnerability in the Certificate Management feature of Cis…8.8
- CVE-2026-2010A vulnerability has been found in Sanluan PublicCMS up to 4.…4.2
- CVE-2026-20100A vulnerability in the LUA interperter of the Remote Access …7.7
- CVE-2026-20101A vulnerability in the SAML 2.0 single sign-on (SSO) feature…8.6
- CVE-2026-20102A vulnerability in the SAML 2.0 single sign-on (SSO) feature…6.1
- CVE-2026-20103A vulnerability in the Remote Access SSL VPN functionality o…8.6
- CVE-2026-20104A vulnerability in the bootloader of Cisco IOS XE Software f…6.1
Are you affected by CVE-2026-20099?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST