CVE-2026-79954

NASA CryptoLib 1.5.0 - TC receive path accepts Security Associations from the wrong GVCID

Published Sep 18, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title NASA CryptoLib 1.5.0 - TC receive path accepts Security Associations from the wrong GVCID
First Time appeared Nasa
Nasa cryptolib
Weaknesses CWE-306
CPEs cpe:2.3:a:nasa:cryptolib:1.5.0:*:linux:*:*:*:*:*
cpe:2.3:a:nasa:cryptolib:1.5.0:*:macos:*:*:*:*:*
cpe:2.3:a:nasa:cryptolib:1.5.0:*:windows:*:*:*:*:*
Vendors & Products Nasa
Nasa cryptolib
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Fluid Attacks
Published
Updated
Sep 18, 2026, 7:58 PM
Reserved
Aug 25, 2026, 3:27 PM
Status
Awaiting Analysis
Published
Sep 18, 2026, 1:16 AM
Modified
Sep 18, 2026, 8:17 PM