CVE-2026-21898
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductNasa Cryptolib
PublishedJan 10, 2026
First seenJan 10, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- nasa cryptolib1.4.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nasa cryptolib | v < 1.4.3 | 1.4.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.