CVE-2026-79954
High
Description
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductCryptoLib
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| NASA CryptoLib | 1.5.0 | — |
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