CVE-2026-5476 Details
Description
A vulnerability was identified 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 leads to integer overflow. The complexity of an attack is rather high. The exploitability is told to be difficult. A fix is planned for the upcoming version milestone of the project.
A critical integer overflow vulnerability has been identified in NASA's Core Flight System (cFS) version 7.0.0 on 32-bit architectures. The issue arises in the function 'CFE_TBL_ValidateCodecLoadSize' within the file 'cfe_tbl_passthru_codec.c'. The vulnerability allows the table load bounds check to be bypassed, leading to out-of-bounds memory writes on affected flight processors, such as LEON3 and RAD750. This issue does not occur on 64-bit targets, where pointer arithmetic does not wrap at 2^32.
A fix for this vulnerability is planned for the upcoming version 7.0.1 of the cFS.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/nasa/cFS/ | [email protected] | Product |
| https://github.com/nasa/cFS/issues/954 | [email protected] | Issue Tracking |
| https://vuldb.com/submit/781971 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/355080 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/355080/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-189 | Numeric Errors | [email protected] |
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| nasa core flight system | <= 7.0.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 4, 2026 | Initial Analysis | [email protected] |
| Apr 3, 2026 | New CVE Received | [email protected] |