Medium severity6.3NVD Advisory· Published Apr 3, 2026· Updated Apr 30, 2026

CVE-2026-5474

Description

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.

Affected products

Nasa/Core Flight System
cpe:2.3:a:nasa:core_flight_system:*:*:*:*:*:*:*:*
Range: <=7.0.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

vuldb.com/submit/781950nvdThird Party AdvisoryVDB Entry
vuldb.com/vuln/355078nvdThird Party AdvisoryVDB Entry
github.com/nasa/cFS/issues/952nvdIssue Tracking
vuldb.com/vuln/355078/ctinvdPermissions RequiredVDB Entry

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

6.3/ 10

CVSS v45.3

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/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

Attack vector: Adjacent
Complexity: Low
Privileges: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS

Probability of exploitation in the next 30 days.

0.02%

VYPR risk score

Composite of severity, exploitation, and reach.

0.41medium

cvss	0.410
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122
Heap-based Buffer Overflow

CVE ID

CVE-2026-5474

Source code

github.com/nasa/cFS/

Credits

0(
0rbitingZer0 (VulDB User)
reporter
VC
VulDB CNA Team
coordinator