CVE-2026-5474 | NASA cFS up to 7.0.0 CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow (Issue 952)

VDB-355078 · CVE-2026-5474 · ISSUE 952 NASA CFS UP TO 7.0.0 CCSDS PACKET HEADER TO_LAB_PASSTHRU_ENCODE.C CFE_MSG_GETSIZE HEAP-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.1 $0-$5k 0.47+ Summaryinfo A vulnerability labeled as critical has been found in NASA cFS up to 7.0.0. This impacts 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. Executing a manipulation can lead to heap-based overflow. This vulnerability appears as CVE-2026-5474. The attacker needs to be present on the local network. There is no available exploit. The project was informed of the problem early through an issue report but has not responded yet. Detailsinfo A vulnerability classified as critical was found in NASA cFS up to 7.0.0. This vulnerability 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. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The advisory is available at github.com. This vulnerability was named CVE-2026-5474. The exploitation appears to be easy. The attack needs to be done within the local network. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of 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: 6.3 VulDB Meta Temp Score: 6.1 VulDB Base Score: 6.3 VulDB Temp Score: 6.1 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: Heap-based overflow CWE: CWE-122 / 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: 952 Status: Not defined CVE: CVE-2026-5474 (🔒) GCVE (CVE): GCVE-0-2026-5474 GCVE (VulDB): GCVE-100-355078 Entryinfo Created: 04/03/2026 09:56 Changes: 04/03/2026 09:56 (55) Complete: 🔍 Submitter: 0rbitingZer0 Cache ID: 99:886:101 Submitinfo Accepted Submit #781950: NASA cFS 7.0.0 Heap over-read via untrusted CCSDS length in TO_LAB sendto (by 0rbitingZer0) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸