Root privilege escalation via overprivileged system commands
Published May 21, 2025 · Updated Feb 26, 2026
Privilege escalation in Cisco Unified Communications and Contact Center products allows local users to gain root via crafted OS commands. System commands in the restricted shell carry excessive permissions, so crafted command execution escapes the shell and runs with root privileges. Exploitation requires administrative access to the ESXi hypervisor and affects listed products regardless of device configuration.
Summary
What happened
Privilege escalation in Cisco Unified Communications and Contact Center products allows local users to gain root via crafted OS commands. System commands in the restricted shell carry excessive permissions, so crafted command execution escapes the shell and runs with root privileges. Exploitation requires administrative access to the ESXi hypervisor and affects listed products regardless of device configuration.
The record
- CVE
- CVE-2025-20112
- Published
- May 21, 2025
- Updated
- Feb 26, 2026
- Vendor
- ClamAV
- Product
- Cisco Unified Contact Center Express
- Classifications
- CWE-268, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 21, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0(1)SU1
- Affected versionversion=10.0(1)SU1ES04
- Affected versionversion=10.5(1)
- Affected versionversion=10.5(1)SU1
- Affected versionversion=10.5(1)SU1ES10
- Affected versionversion=10.6(1)
- Affected versionversion=10.6(1)SU1
- Affected versionversion=10.6(1)SU2
- Affected versionversion=10.6(1)SU2ES04
- Affected versionversion=10.6(1)SU3
- Affected versionversion=10.6(1)SU3ES01
- Affected versionversion=10.6(1)SU3ES02
- Affected versionversion=10.6(1)SU3ES03
- Affected versionversion=11.0(1)SU1
- Affected versionversion=11.0(1)SU1ES02
- Affected versionversion=11.0(1)SU1ES03
- Affected versionversion=11.5(1)ES01
- Affected versionversion=11.5(1)SU1
- Affected versionversion=11.5(1)SU1ES01
- Affected versionversion=11.5(1)SU1ES02
- Affected versionversion=11.5(1)SU1ES03
- Affected versionversion=11.6(1)
- Affected versionversion=11.6(1)ES01
- Affected versionversion=11.6(1)ES02
- Affected versionversion=11.6(2)
- Affected versionversion=11.6(2)ES01
- Affected versionversion=11.6(2)ES02
- Affected versionversion=11.6(2)ES03
- Affected versionversion=11.6(2)ES04
- Affected versionversion=11.6(2)ES05
- Affected versionversion=11.6(2)ES06
- Affected versionversion=11.6(2)ES07
- Affected versionversion=11.6(2)ES08
- Affected versionversion=12.0(1)
- Affected versionversion=12.0(1)ES01
- Affected versionversion=12.0(1)ES02
- Affected versionversion=12.0(1)ES03
- Affected versionversion=12.0(1)ES04
- Affected versionversion=12.5(1)
- Affected versionversion=12.5(1)ES01
- Affected versionversion=12.5(1)ES02
- Affected versionversion=12.5(1)ES03
- Affected versionversion=12.5(1)_SU01_ES01
- Affected versionversion=12.5(1)_SU01_ES02
- Affected versionversion=12.5(1)_SU01_ES03
- Affected versionversion=12.5(1)_SU02_ES01
- Affected versionversion=12.5(1)_SU02_ES02
- Affected versionversion=12.5(1)_SU02_ES03
- Affected versionversion=12.5(1)_SU02_ES04
- Affected versionversion=12.5(1)_SU03_ES01
- Affected versionversion=12.5(1)_SU03_ES02
- Affected versionversion=12.5(1)_SU03_ES03
- Affected versionversion=12.5(1)_SU03_ES04
- Affected versionversion=12.5(1)_SU03_ES05
- Affected versionversion=12.5(1)_SU03_ES06
- Affected versionversion=12.5(1)SU1
- Affected versionversion=12.5(1)SU2
- Affected versionversion=12.5(1)SU3
- Affected versionversion=8.5(1)
- Affected versionversion=8.5(1)SU4ES09
- Affected versionversion=9.0(2)SU3ES04
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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