UBUNTU-CVE-2026-120752

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    UBUNTU-CVE-2026-120752

    Published: 2 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-120752

    Summary:

    Details: PyMuPDF 1.25.3 before 2.0 contains a stack-based buffer overflow vulnerability in JM_set_annot_callout_line() that copies a caller-supplied number of callout points into a fixed three-element stack array. Attackers who control the callout argument passed to Page.add_freetext_annot() can supply four or more points to overwrite the stack frame, crashing the process or executing code.

    References: https://ubuntu.com/security/CVE-2026-120752, https://www.cve.org/CVERecord?id=CVE-2026-120752, https://github.com/pymupdf/PyMuPDF/issues/5112, https://github.com/pymupdf/PyMuPDF/issues/5173, https://github.com/pymupdf/PyMuPDF, https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797, https://github.com/pymupdf/PyMuPDF/commit/d4298ead84ceeae1c9065c81cd9a275a1b092f5e, https://github.com/pymupdf/PyMuPDF/releases/tag/2.0, https://www.vulncheck.com/advisories/pymupdf-1.25.3-before-2.0-stack-buffer-overflow-via-add-freetext-annot-callout

    Affected packages

    Package

    Name: pymupdf

    Purl: pkg:deb/ubuntu/pymupdf?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.16.11-1

    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
    UBUNTU-CVE-2026-120752 | CVE-DB