CVE-2026-21898

8.2 HIGH
Published: January 10, 2026 Modified: January 15, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/nasa/CryptoLib/releases/tag/v1.4.3
Source: security-advisories@github.com
Release Notes
https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853
Source: security-advisories@github.com
Exploit Vendor Advisory
https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.2 / 10.0
EPSS (Exploit Probability)
0.0%
9th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

nasa