Root command execution via unvalidated cron values
Published Aug 17, 2026 · Updated Aug 17, 2026
OS command injection in GL.iNet router firmware 4.6 through 4.8 allows remote authenticated users to execute commands as root. The Wi-Fi timer power-schedule feature stores unvalidated switch_power and restore_power values, which the timer service writes into root cron entries. Administrative access to the network-reachable management interface is required, and successful exploitation permits file access, persistent configuration changes, and control of routing or firewall behavior.
Summary
What happened
OS command injection in GL.iNet router firmware 4.6 through 4.8 allows remote authenticated users to execute commands as root. The Wi-Fi timer power-schedule feature stores unvalidated switch_power and restore_power values, which the timer service writes into root cron entries. Administrative access to the network-reachable management interface is required, and successful exploitation permits file access, persistent configuration changes, and control of routing or firewall behavior.
The record
- CVE
- CVE-2026-19981
- Published
- Aug 17, 2026
- Updated
- Aug 17, 2026
- Vendor
- GL.iNet
- Product
- AXT1800
- Classifications
- CWE-78, CWE-77, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 17, 2026CVE publishedPublication date reported by the CVE source.
- Aug 17, 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=4.0
- Affected versionversion=4.1
- Affected versionversion=4.2
- Affected versionversion=4.3
- Affected versionversion=4.4
- Affected versionversion=4.5
- Affected versionversion=4.6
- Affected versionversion=4.7
- Affected versionversion=4.8
What conditions does exploitation require?
What is affected?
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.
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Technologies
Your stack
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Your stack
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