Vulnerability Details CVE-2025-64096
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. Prier to 1.4.2, there is a missing bounds check in Crypto_Key_update() (crypto_key_mgmt.c) which allows a remote attacker to trigger a stack-based buffer overflow by supplying a TLV packet with a spoofed length field. The function calculates the number of keys from an attacker-controlled field (pdu_len), which may exceed the static array size (kblk[98]), leading to an out-of-bounds write and potential memory corruption. This vulnerability is fixed in 1.4.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.1%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2025-64096
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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