Vulnerability Details CVE-2026-22027
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.3%
CVSS Severity
CVSS v3 Score 6.0
References
Products affected by CVE-2026-22027
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cpe:2.3:a:nasa:cryptolib:1.0.0
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cpe:2.3:a:nasa:cryptolib:1.0.1
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cpe:2.3:a:nasa:cryptolib:1.0.2
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cpe:2.3:a:nasa:cryptolib:1.0.3
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cpe:2.3:a:nasa:cryptolib:1.1.0
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cpe:2.3:a:nasa:cryptolib:1.1.1
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cpe:2.3:a:nasa:cryptolib:1.2.0
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cpe:2.3:a:nasa:cryptolib:1.2.1
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cpe:2.3:a:nasa:cryptolib:1.2.2
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cpe:2.3:a:nasa:cryptolib:1.2.3
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cpe:2.3:a:nasa:cryptolib:1.3.0
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cpe:2.3:a:nasa:cryptolib:1.3.1
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cpe:2.3:a:nasa:cryptolib:1.3.2
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cpe:2.3:a:nasa:cryptolib:1.3.3
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cpe:2.3:a:nasa:cryptolib:1.4.0
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cpe:2.3:a:nasa:cryptolib:1.4.1
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cpe:2.3:a:nasa:cryptolib:1.4.2