CVE-2026-5475 | NASA cFS up to 7.0.0 CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption (Issue 953)

VDB-355079 · CVE-2026-5475 · ISSUE 953 NASA CFS UP TO 7.0.0 CCSDS HEADER SIZE CFE_SB_PRIV.C CFE_SB_TRANSMITMSG MEMORY CORRUPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 0.85+ Summaryinfo A vulnerability marked as critical has been reported in NASA cFS up to 7.0.0. Affected is the function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS Header Size Handler. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2026-5475. There is no exploit available. The project was informed of the problem early through an issue report but has not responded yet. Detailsinfo A vulnerability, which was classified as critical, has been found in NASA cFS up to 7.0.0. This issue affects the function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS Header Size Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-5475. The exploitation is known to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/03/2026). The project was informed of the problem early through an issue report but has not responded yet. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor NASA Name cFS Version 7.0 Website Product: https://github.com/nasa/cFS/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.5 VulDB Meta Temp Score: 5.3 VulDB Base Score: 5.5 VulDB Temp Score: 5.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Memory corruption CWE: CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/03/2026 Advisory disclosed 04/03/2026 +0 days VulDB entry created 04/03/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: 953 Status: Not defined CVE: CVE-2026-5475 (🔒) GCVE (CVE): GCVE-0-2026-5475 GCVE (VulDB): GCVE-100-355079 Entryinfo Created: 04/03/2026 09:56 Changes: 04/03/2026 09:56 (55) Complete: 🔍 Submitter: 0rbitingZer0 Cache ID: 99:EF9:101 Submitinfo Accepted Submit #781951: NASA cFS 7.0.0 CFE_SB_TransmitMsg memcpy trusts CCSDS header size without sourc (by 0rbitingZer0) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸