Vulnerability Description
CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, the convert_hexstring_to_byte_array() function in the MariaDB SA interface writes decoded bytes into a caller-provided buffer without any capacity check. When importing SA fields from the database (e.g., IV, ARSN, ABM), a malformed or oversized hex string in the database can overflow the destination buffer, corrupting adjacent heap memory. This issue has been patched in version 1.4.3.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nasa | Cryptolib | < 1.4.3 |
Related Weaknesses (CWE)
References
- https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821Patch
- https://github.com/nasa/CryptoLib/releases/tag/v1.4.3Release Notes
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-3m35-m689-h29xExploitVendor Advisory
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-3m35-m689-h29xExploitVendor Advisory
FAQ
What is CVE-2026-22027?
CVE-2026-22027 is a vulnerability with a CVSS score of 6.0 (MEDIUM). CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight Syst...
How severe is CVE-2026-22027?
CVE-2026-22027 has been rated MEDIUM with a CVSS base score of 6.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22027?
Check the references section above for vendor advisories and patch information. Affected products include: Nasa Cryptolib.