CVE-2026-21898

8.2 highEPSS 0.4%

High (8.2) in nasa cryptolib. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.2 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2026-01-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nasa:cryptolib

References

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

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