CVE-2026-21898HIGH 8.2EPSS p33.0%

CVE-2026-21898CVE-2026-21898

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 Crypto_AOS_ProcessSecurity function reads memory without valid bounds checking when parsing AOS frame hashes. This issue has been patched in version 1.4.3.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS0.41% probability of exploitation · percentile 33.0% · 2026-06-19T12:03:05Z
Published2026-01-10
Last modified2026-01-15

Underlying weaknesses· 1

CWE-125

References

  1. https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
  2. https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853
  3. https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Readcwe-1250%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.