CVE-2026-120752 | BDVDB-2026-399296 Detail
PyMuPDFPyMuPDF
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-121 Stack-based Buffer Overflow
References#
- https://github.com/pymupdf/PyMuPDF/issues/5112
- https://github.com/pymupdf/PyMuPDF/issues/5173
- https://github.com/pymupdf/PyMuPDF/commit/d4298ead84ceeae1c9065c81cd9a275a1b092f5e
- https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797
- https://github.com/pymupdf/PyMuPDF/releases/tag/2.0
- https://github.com/pymupdf/PyMuPDF
- https://www.vulncheck.com/advisories/pymupdf-1.25.3-before-2.0-stack-buffer-overflow-via-add-freetext-annot-callout
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.