CVE-2026-6952 Command injection in AX7501-B1 firmware
An authenticated administrator can execute arbitrary OS commands via the syslog LogServer field in Zyxel AX7501-B1 firmware.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6952?
CVE-2026-6952 is a high-severity command injection vulnerability in Zyxel AX7501-B1 firmware, published on 21 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A post-authentication command injection vulnerability in the "LogServer" field of the syslog component in Zyxel AX7501-B1 firmware versions through 5.17(ABPC.7.2)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.
Weakness: CWE-78
Which versions are affected by CVE-2026-6952?
How do I fix CVE-2026-6952?
No fix has been published for CVE-2026-6952 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-6952 being exploited?
There is no known exploitation of CVE-2026-6952 in the wild and no public exploit code.
Sources
Also known as GHSA-957w-jr89-h22x.