CVE-2026-22027: CryptoLib Vulnerable to Heap Buffer Overflow in MariaDB SA Hexstring Conversion
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 converthexstringtobytearray() 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 Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-22027?
CVE-2026-22027 has not been officially assigned a severity score, but it impacts communications security in the CryptoLib software.
How do I fix CVE-2026-22027?
To fix CVE-2026-22027, upgrade to CryptoLib version 1.4.3 or later.
What software is affected by CVE-2026-22027?
CVE-2026-22027 affects CryptoLib versions prior to 1.4.3.
What type of vulnerability is CVE-2026-22027?
CVE-2026-22027 is a vulnerability related to the handling of hex string conversion in the CryptoLib communication protocol.
What are the consequences of CVE-2026-22027?
Exploitation of CVE-2026-22027 could lead to potential security breaches during communication between spacecraft and ground stations.