Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nasa | Cryptolib | < 1.4.3 |
Related Weaknesses (CWE)
References
- https://github.com/nasa/CryptoLib/releases/tag/v1.4.3Release Notes
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853ExploitVendor Advisory
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-7ch6-2pmg-m853ExploitVendor Advisory
FAQ
What is CVE-2026-21898?
CVE-2026-21898 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 Syst...
How severe is CVE-2026-21898?
CVE-2026-21898 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-21898?
Check the references section above for vendor advisories and patch information. Affected products include: Nasa Cryptolib.