CVE-2026-5476 NASA cFS cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow
An integer overflow in NASA cFS table codec validation allows attackers to potentially execute code or cause denial of service on 32-bit systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5476?
CVE-2026-5476 is a low-severity vulnerability in NASA cFS, published on 3 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was identified in NASA cFS up to 7.0.0 on 32-bit. Affected is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation leads to integer overflow. The complexity of an attack is rather high. The exploitability is told to be difficult. A fix is planned for the upcoming version milestone of the project.
Which versions are affected by CVE-2026-5476?
It affects 1 product.
Products include Nasa Core Flight System.
How do I fix CVE-2026-5476?
No fix has been published for CVE-2026-5476 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-5476 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5476 exists.
Other vulnerabilities in NASA cFS
Sources
Also known as GHSA-7x3q-gg96-9jgx.