CVE-2026-82479 NASA cFS SBN TCP sbn_tcp_if.c OS_read buffer overflow
A buffer overflow in the NASA cFS SBN TCP module allows local network attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82479?
CVE-2026-82479 is a medium-severity memory corruption vulnerability in NASA cFS, published on 30 Aug 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 7.0.1. Impacted is the function OS_read of the file modules/protocol/tcp/fsw/src/sbn_tcp_if.c of the component SBN TCP Module. Such manipulation of the argument MsgSz leads to buffer overflow. The attack must be carried out from within the local network. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-82479?
How do I fix CVE-2026-82479?
No fix has been published for CVE-2026-82479 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-2026-82479 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82479 exists.
Sources
Also known as GHSA-6cv3-j4mc-jf2r.