CVE-2026-5475 NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption
Memory corruption in NASA cFS allows attackers to execute code or cause denial of service via manipulated CCSDS headers.
- 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-2026-5475?
CVE-2026-5475 is a medium-severity memory corruption 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 determined in NASA cFS up to 7.0.0. This impacts the function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS Header Size Handler. Executing a manipulation can lead to memory corruption. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-119
Which versions are affected by CVE-2026-5475?
It affects 1 product.
Products include Nasa Core Flight System.
How do I fix CVE-2026-5475?
No fix has been published for CVE-2026-5475 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-2026-5475 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5475 exists.
Other vulnerabilities in NASA cFS
Sources
Also known as GHSA-j8qx-48g9-p37g.