CVE-2026-82480 MEDIUM

CVE-2026-82480: NASA cFS cFE Software Bus cfe_sb_util.c CFE_SB_GetUserDataLength integer underflow

Vendor Nasa
Product cFS
Weakness CWE-191
Published August 30, 2026
Last update August 30, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X

What the vulnerability does

01Description

A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c of the component cFE Software Bus. Performing a manipulation of the argument TotalMsgSize/HdrSize results in integer underflow. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

August 30, 2026 CVE published