CVE-2026-120752

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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/issues/5112
https://github.com/pymupdf/PyMuPDF/issues/5173
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

Configurations

No configuration.

History

02 Nov 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-11-02 23:17

Updated : 2026-11-03 16:25

NVD link : CVE-2026-120752

Mitre link : CVE-2026-120752

CVE.ORG link : CVE-2026-120752

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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