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    CVE-2020-21896

    A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device.c in Artifex Software MuPDF 1.16.0 allows remote attackers to cause a denial of service via opening of a crafted PDF file.

    Published:Aug 22, 2023
    Last Modified:Nov 3, 2025
    EPS:Aug 22, 2023
    EPSS Score:0.00203
    CVSS Score:5.5

    Affected Products

    Vendor
    Artifex
    Product
    Mupdf

    Exploits

    https://bugs.ghostscript.com/show_bug.cgi?id=701294https://bugs.ghostscript.com/show_bug.cgi?id=701294

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-71382 (CVSS 7.1) — MuPDF before 1.27.0-rc1 contains an uncontrolled recursion vulnerability in the EPUB CSS rendering engine that…
    CVE-2026-7233 (CVSS 1.9) — A vulnerability was determined in Artifex MuPDF up to 1.28.0. The impacted element is the function fz_subset_c…
    CVE-2026-40505 (CVSS 4.8) — MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary…
    CVE-2026-3308 (CVSS 7.8) — An integer overflow vulnerability in 'pdf-image.c' in Artifex's MuPDF version 1.27.0 allows an attacker to mal…
    CVE-2025-15569 (CVSS 7.3) — A flaw has been found in Artifex MuPDF up to 1.26.1 on Windows. The impacted element is the function get_syste…
    CVE-2026-25556 (CVSS 5.9) — MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list()…
    CVE-2025-55780 (CVSS 7.5) — A null pointer dereference occurs in the function break_word_for_overflow_wrap() in MuPDF 1.26.4 when renderin…
    CVE-2025-46206 (CVSS 6.5) — An issue in Artifex mupdf 1.25.6, 1.25.5 allows a remote attacker to cause a denial of service via an infinite…
    CVE-2024-46657 (CVSS 5.5) — Artifex Software mupdf v1.24.9 was discovered to contain a segmentation fault via the component /tools/pdfextr…
    CVE-2024-24259 (CVSS 7.5) — freeglut through 3.4.0 was discovered to contain a memory leak via the menuEntry variable in the glutAddMenuEn…

    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