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    2 vulnerabilities by TeX Live

    CVE-2026-63729 (GCVE-0-2026-63729)

    Vulnerability from nvd – Published: 2026-07-21 01:35 – Updated: 2026-07-21 13:19
    VLAI
    Title
    TeX Live SyncTeX Parser Heap Use-After-Free via Malformed SyncTeX File
    Summary
    The SyncTeX parser (synctex_parser.c) shipped with TeX Live and embedded by downstream consumers such as GNOME Evince contains a heap use-after-free vulnerability that allows attackers to crash applications or potentially execute arbitrary code by supplying a malformed .synctex or .synctex.gz file. A malformed SyncTeX file can construct a ref node with a NULL parent pointer, causing the replacement routine to fail to detach the node from its sibling chain, which triggers recursive freeing of live tree nodes and leaves dangling pointers that are later accessed by the parser during document load.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
    6.6 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    TeX Live TeX Live Affected: 0 , ≤ TeX Live 2025 (custom)
    Unaffected: TeX Live 2026 (custom)
    		Create a notification for this product.
    Date Public
    2026-07-20 00:00
    Credits
    Fatih Çelik
    Show details on NVD website
    To clipboard 

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    CVE-2026-63729 (GCVE-0-2026-63729)

    Vulnerability from cvelistv5 – Published: 2026-07-21 01:35 – Updated: 2026-07-21 13:19
    VLAI
    Title
    TeX Live SyncTeX Parser Heap Use-After-Free via Malformed SyncTeX File
    Summary
    The SyncTeX parser (synctex_parser.c) shipped with TeX Live and embedded by downstream consumers such as GNOME Evince contains a heap use-after-free vulnerability that allows attackers to crash applications or potentially execute arbitrary code by supplying a malformed .synctex or .synctex.gz file. A malformed SyncTeX file can construct a ref node with a NULL parent pointer, causing the replacement routine to fail to detach the node from its sibling chain, which triggers recursive freeing of live tree nodes and leaves dangling pointers that are later accessed by the parser during document load.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
    6.6 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    TeX Live TeX Live Affected: 0 , ≤ TeX Live 2025 (custom)
    Unaffected: TeX Live 2026 (custom)
    		Create a notification for this product.
    Date Public
    2026-07-20 00:00
    Credits
    Fatih Çelik
    Show details on NVD website
    To clipboard 

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