What’s Vulnerable › Vulnerabilities

CVE-2026-22024: CryptoLib Memory Leak in KMC Encrypt Function Leads to Resource Exhaustion

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-10 · updated 2026-06-17
• Weakness: CWE-401

Description

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 cryptography_encrypt() function allocates multiple buffers for HTTP requests and JSON parsing that are never freed on any code path. Each call leaks approximately 400 bytes of memory. Sustained traffic can gradually exhaust available memory. This issue has been patched in version 1.4.3.

Affected products

• nasa CryptoLib: before 1.4.3 — fixed in 1.4.3

How to fix

Upgrade to a fixed version: nasa CryptoLib 1.4.3. Check the vendor advisory for mitigations.

References

• https://github.com/nasa/CryptoLib/commit/2372efd3da1ccb226b4297222e25f41ecc84821d
• https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
• https://github.com/nasa/CryptoLib/security/advisories/GHSA-r3wg-g8xv-gxvf
• https://github.com/nasa/CryptoLib/security/advisories/GHSA-r3wg-g8xv-gxvf

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