NASA CryptoLib 1.5.0 Receive Path improper authorization

Summaryinfo

A vulnerability identified as very critical has been detected in NASA CryptoLib 1.5.0. The affected element is an unknown function of the component Receive Path. Performing a manipulation results in improper authorization. This vulnerability is known as CVE-2026-79954. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in NASA CryptoLib 1.5.0. This affects some unknown functionality of the component Receive Path. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at fluidattacks.com. This vulnerability is uniquely identified as CVE-2026-79954 since 08/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/18/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• NASA

Name

• CryptoLib

Version

• 1.5.0

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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