CVE-2026-79954: Nasa Cryptolib

High severity, CVSS 8.7. EPSS: 0.6% chance of exploitation in the next 30 days.

NASA CryptoLib 1.5.0 contains an authentication downgrade vulnerability in the Telecommand (TC) receive path. The receiver selects the Security Association used for SDLS processing solely from the SPI field inside the incoming frame, but it does not verify that the selected SA is authorized for the frame's GVCID.

Affected products

• Nasa Cryptolib: version 1.5.0 only

Published 2026-09-18. Last modified 2026-09-18.