CVE-2026-21898

HIGH

8.2

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.

CVE Details

CVSS v3.1 Score8.2

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/10/2026

Last Modified1/15/2026

Sourcenvd

Honeypot Sightings0

Affected Products

nasa:cryptolib

Weaknesses (CWE)

CWE-125

References

https://github.com/nasa/CryptoLib/releases/tag/v1.4.3(security-advisories@github.com)

https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853(security-advisories@github.com)

https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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