CVE-2026-21898

HIGH EPSS 33.2%
Published Jan 10, 20265mo ago · Modified Jun 17, 20261w ago
8.2 CVSS 3.1
High
Find Similar
Published Jan 10, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
33.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
nasacryptolib* <1.4.3

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.