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    CVE-2020-6623

    stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.

    Published:Jan 8, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 8, 2020
    EPSS Score:0.0037
    CVSS Score:8.8

    Affected Products

    Vendor
    Nothings
    Product
    Stb Truetype.h

    Exploits

    https://github.com/nothings/stb/issues/865https://github.com/nothings/stb/issues/865

    Common Weakness Enumeration

    CWE-617 Reachable Assertion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-5315 (CVSS 2.1) — A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get…
    CVE-2026-5314 (CVSS 2.1) — A vulnerability was found in Nothings stb up to 1.26. Impacted is the function stbtt_InitFont_internal in the …
    CVE-2022-25516 (CVSS 6.5) — stb_truetype.h v1.26 was discovered to contain a heap-buffer-overflow via the function stbtt__find_table at st…
    CVE-2022-25515 (CVSS 6.5) — stb_truetype.h v1.26 was discovered to contain a heap-buffer-overflow via the function ttULONG() at stb_truety…
    CVE-2022-25514 (CVSS 7.5) — stb_truetype.h v1.26 was discovered to contain a heap-buffer-overflow via the function ttUSHORT() at stb_truet…
    CVE-2020-6617 (CVSS 8.8) — stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_int.…
    CVE-2020-6618 (CVSS 8.8) — stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.…
    CVE-2020-6619 (CVSS 8.8) — stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.…
    CVE-2020-6620 (CVSS 8.8) — stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_get8.…
    CVE-2020-6621 (CVSS 8.8) — stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.…

    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