CVE-2026-5475: nasa cfs
CVSS: 5.5v3.1MediumAnalyzed
Published 03-04-2026Last modified 03-04-2026
Vulnerability summary
CVE-2026-5475 is a medium (CVSS 5.5) vulnerability in nasa cfs. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 25.3% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.33%
0%100%
Low · +0.12 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 03-04-2026PublishedVulnerability first disclosed.
- 03-04-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
7 scores · 2 sources · 4 versionsMedium 5.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:XSourcesAll 2 agree
- NVDNIST5.1MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Medium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:RSourcesAll 2 agree
- NVDNIST5.5MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Medium 5.5Preferred score · CVE.org (CNA)
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:RSourcesSingle source
Medium 5.2Preferred score · CVE.org (CNA)
AV:A/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:URSourcesAll 2 agree
- NVDNIST5.2MediumAV:A/AC:L/Au:S/C:P/I:P/A:P
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
+0.12 pp
From 0.22% on 20-09-2026
20-09-202620-10-2026
EPSS score0.33%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Nasa2 products
- cfs7.0
- core_flight_system≤ 7.0.0
1 vendor · 2 products
References
5 links- github.com/nasa/cFS/issues/953Issue Tracking
- github.com/nasa/cFS/Product