CVE-2026-5476 | NASA cFS up to 7.0.0 on 32-bit cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow (Issue 954)

VDB-355080 · CVE-2026-5476 · ISSUE 954 NASA CFS UP TO 7.0.0 ON 32-BIT CFE_TBL_PASSTHRU_CODEC.C CFE_TBL_VALIDATECODECLOADSIZE INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.5 $0-$5k 0.47+ Summaryinfo A vulnerability described as critical has been identified in NASA cFS up to 7.0.0 on 32-bit. Affected by this vulnerability is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation results in integer overflow. This vulnerability is known as CVE-2026-5476. No exploit is available. A fix is planned for the upcoming version milestone of the project. Detailsinfo A vulnerability, which was classified as critical, was found in NASA cFS up to 7.0.0 on 32-bit. Affected is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-5476. The exploitability is told to be difficult. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/03/2026). A fix is planned for the upcoming version milestone of the project. 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: 4.6 VulDB Meta Temp Score: 4.5 VulDB Base Score: 4.6 VulDB Temp Score: 4.5 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: Integer overflow CWE: CWE-190 / CWE-189 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: 954 Status: Not defined CVE: CVE-2026-5476 (🔒) GCVE (CVE): GCVE-0-2026-5476 GCVE (VulDB): GCVE-100-355080 Entryinfo Created: 04/03/2026 09:56 Changes: 04/03/2026 09:56 (55) Complete: 🔍 Submitter: 0rbitingZer0 Cache ID: 99:5EB:101 Submitinfo Accepted Submit #781971: NASA cFS 7.0.0 Integer overflow in CFE_TBL_ValidateCodecLoadSize bypasses boun (by 0rbitingZer0) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸