Buffer overflow in Nasa Cfs
CVE-2026-5474
A vulnerability was found in NASA cFS up to 7.0.0. This affects the function CFE_MSG_GetSize of the file apps/to_lab/fsw/src/to_lab_passthru_encode.c of the component CCSDS Packet Header Handler. Performing a manipulation results in heap-based buffer overflow. The attacker must have access to the local network to execute the attack. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (47.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Nasa Cfs — versions 7.0
- Nasa Core Flight System
Weakness classification (CWE)
References
- vuldb.com/vuln/355078 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/355078/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/781950 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/nasa/cFS/issues/952 (issue-tracking, Issue Tracking)
- github.com/nasa/cFS/ (Product, product)
Frequently asked questions
- What is CVE-2026-5474?
- CVE-2026-5474 is a medium-severity vulnerability in Nasa Cfs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.3/10. Published 2026-04-03.
- How severe is CVE-2026-5474?
- Medium severity. CVSS v3 base score is 6.3 out of 10.