Is CVE-2026-79954 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-79954 being exploited in the wild.

How severe is CVE-2026-79954?

Informational severity, published 18 September 2026.

Is there a fix for CVE-2026-79954?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-79954 attacked?

It is attacked over the network.

Am I affected by CVE-2026-79954?

Check whether you run Nasa CryptoLib at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-79954: NASA CryptoLib authentication downgrade in Telecommand receive

CVE-2026-79954 · Severity: info · Published 2026-09-18

NASA CryptoLib is a security library used to protect communications between spacecraft and ground stations using cryptographic protocols. This vulnerability allows an attacker to use security credentials from an unauthorized communication channel to bypass authentication checks, potentially allowing unauthorized telecommands to reach the spacecraft.

Vendors: Nasa.

Quick answers

Is CVE-2026-79954 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-79954 being exploited in the wild.
How severe is CVE-2026-79954?: Informational severity, published 18 September 2026.
Which products and versions are affected?: Nasa CryptoLib 1.5.0.
Is there a fix for CVE-2026-79954?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-79954 attacked?: It is attacked over the network.
Am I affected by CVE-2026-79954?: Check whether you run Nasa CryptoLib at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an authentication bypass in the Telecommand (TC) receive path of NASA CryptoLib 1.5.0. The receiver selects the Security Association (SA) used for SDLS processing based solely on the SPI (Security Parameter Index) field from the incoming frame, without verifying that the selected SA is authorized for the frame's GVCID (Ground Virtual Channel ID). This allows an attacker to craft frames that reference a valid SA from a different GVCID, bypassing intended access controls. The vulnerability requires network access to the TC receive path. A patch or mitigated version is likely available as this has been formally disclosed with a CVE.

Affected products

NASA CryptoLib 1.5.0

Timeline

2026-09-18: disclosed

References

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