CVE-2026-22027: Nasa Cryptolib

Medium severity, CVSS 6.0. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Nasa Cryptolib: before 1.4.3 (fixed in 1.4.3)

Published 2026-01-10. Last modified 2026-06-17.