CVE-2026-5474: NASA cFS

NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow

CVSS 5.3 MediumEPSS 0.0039 · 33rd percentile

Published by the CVE Program (CNA: VulDB) at 3 Apr 2026, 17:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
NASA	cFS	affected 7.0

Identifiers

CVE-2026-5474

CNA

VulDB

Weakness (CWE)

CWE-119 · CWE-122

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	CNA (VulDB)Used for this record
6.3	Medium	3.1	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R	CNA (VulDB)
6.3	Medium	3.0	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R	CNA (VulDB)
5.8	Medium	2.0	AV:A/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0039, the 33rd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 3 Apr 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/355078 vdb-entrytechnical-description
vuldb.com/vuln/355078/cti signaturepermissions-required
vuldb.com/submit/781950 third-party-advisory
github.com/nasa/cFS/issues/952 issue-tracking
github.com/nasa/cFS/ product

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.