CVE-2026-22024CWE-401

CryptoLib Memory Leak in KMC Encrypt Function Leads to Resource Exhaustion

Medium · published January 10, 2026

CVSS v4.0
6.3
EPSS
0%
Percentile
40.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00479 · 40.4th percentile
Weakness
CWE-401 · Missing Release of Memory after Effective Lifetime
Published
2026-01-10T00:19Z
EPSS history
Timeline
  • 10 JAN 00:19Z
    CryptoLib Memory Leak in KMC Encrypt Function Leads to Resource Exhaustion
    cvelistv5