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    CVE-2026-79954

    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.

    Published:Sep 18, 2026
    Last Modified:Sep 18, 2026
    EPS:Sep 18, 2026
    EPSS Score:0.00323
    CVSS Score:8.7

    Affected Products

    Vendor
    Nasa
    Product
    Cryptolib

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-22026 (CVSS 8.2) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-22025 (CVSS 6.3) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-22024 (CVSS 6.3) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-22023 (CVSS 8.2) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-21900 (CVSS 8.2) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-21899 (CVSS 4.7) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-21898 (CVSS 8.2) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…
    CVE-2026-21897 (CVSS 7.3) — CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Proce…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High