CVE-2026-86299 Linksys RE7000 PingTest json.cgi platform_event_pingTest os command injection
Remote attackers can execute arbitrary OS commands on Linksys RE7000 devices via the PingTest handler, requiring specific permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86299?
CVE-2026-86299 is a critical command injection vulnerability in Linksys RE7000, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in Linksys RE7000 2.0.15. This affects the function platform_event_pingTest of the file /cgi-bin/json.cgi?PingTest of the component PingTest Handler. The manipulation of the argument pingTestIp/pingTestPktSize/pingTestTimes results in os command injection. The attack can be launched remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-86299?
How do I fix CVE-2026-86299?
No fix has been published for CVE-2026-86299 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-2026-86299 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86299 exists.
Sources
Also known as GHSA-8gm9-6v5q-x2cp.