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CVE-2026-22027: cryptolib vulnerability
CVE-2026-22027: medium vulnerability affecting cryptolib. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 5.7 MEDIUM
- EPSS
- 11.74%
- Known exploited
- not in KEV
- Product
- cryptolib
What is known
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.
Business impact
Successful exploitation of CVE-2026-22027, a medium vulnerability (CVSS 5.7) affecting cryptolib, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether cryptolib is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.