CVE-2026-57266 GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
An out-of-bounds read in GeoWebPlayer's WebSocket server allows attackers to potentially execute code or cause denial of service via crafted index values.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-57266?
CVE-2026-57266 is a high-severity memory corruption vulnerability in GeoVision Inc. GeoWebPlayer, published on 2 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
GeoWebPlayer (also called "Web Plugin" in the GV-VMS documentation and "WS Player" for VMS-Cloud) is an addon that can be installed with various GeoVision software (GV-VMS, GV-Cloud, ...). It creates a websocket server that expands the capabilities of the various web-interfaces provided by the GeoVision software and may be necessary for them to function properly.
The Websocket server can accept various commands coming from localhost. Many of the commands will take an `index` value that is then used to access various arrays to enter critical sections, perform various actions via function calls, etc. However the `index` value is usually not checked for valid range, and as such it can be used to access multiple arrays out-of-bound.
#### 2wayAudio command index-out-of-bound
Weakness: CWE-129
Which versions are affected by CVE-2026-57266?
How do I fix CVE-2026-57266?
No fix has been published for CVE-2026-57266 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-57266 being exploited?
There is no known exploitation of CVE-2026-57266 in the wild and no public exploit code.
Sources
Also known as GHSA-2xjx-g628-x8w8.