Administrator-to-root command execution via crafted CLI arguments
Published Mar 4, 2026 · Updated Mar 4, 2026
Command injection in Cisco Secure Firewall Threat Defense allows local users with administrative credentials to execute operating-system commands as root. The CLI insufficiently validates crafted arguments to an unspecified command, allowing injected input to reach the underlying operating system. All device configurations are affected, but Cisco has not disclosed the command or argument syntax; successful exploitation grants root command execution.
Summary
What happened
Command injection in Cisco Secure Firewall Threat Defense allows local users with administrative credentials to execute operating-system commands as root. The CLI insufficiently validates crafted arguments to an unspecified command, allowing injected input to reach the underlying operating system. All device configurations are affected, but Cisco has not disclosed the command or argument syntax; successful exploitation grants root command execution.
The record
- CVE
- CVE-2026-20063
- Published
- Mar 4, 2026
- Updated
- Mar 4, 2026
- Vendor
- ClamAV
- Product
- Cisco Secure Firewall Threat Defense
- Classifications
- CWE-88, T1059
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 4, 2026CVE publishedPublication date reported by the CVE source.
- Mar 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.6.0
- Affected versionversion=7.6.1
- Affected versionversion=7.6.2
- Affected versionversion=7.6.2.1
- Affected versionversion=7.7.0
- Affected versionversion=7.7.10
- Affected versionversion=7.7.10.1
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
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Your stack
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