PT-2026-2128 · Cryptolib · Cryptolib

Finder16 · CVE-2026-21898 · Published 2026-01-10 · Updated 2026-01-15

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions CryptoLib versions prior to 1.4.3

Description CryptoLib is a software solution that uses the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft and a ground station. Prior to version 1.4.3, the Crypto AOS ProcessSecurity function does not perform valid bounds checking when parsing AOS frame hashes, leading to a potential issue.

Recommendations Versions prior to 1.4.3 should be updated to version 1.4.3 or later.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-21898

GHSA-7CH6-2PMG-M853

Affected Products

Cryptolib

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21898.json · Exploit
• 🔥 https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-21898 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21898 · Vendor Advisory
• https://github.com/nasa/CryptoLib/releases/tag/v1.4.3 · Note
• https://twitter.com/CVEnew/status/2009846306261610571 · Twitter Post
• https://twitter.com/cracbot/status/2011755291873067266 · Twitter Post
• https://twitter.com/TheHackerWire/status/2009799975761523166 · Twitter Post
• https://t.me/cveNotify/148320 · Telegram Post
• https://t.me/CVEtracker/41887 · Telegram Post
• https://twitter.com/pulsepatchio/status/2010357203308523786 · Twitter Post