Is CVE-2026-120752 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-120752?

CVE-2026-120752 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-120752

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.