{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-120752","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-02T21:08:16.717Z","datePublished":"2026-11-02T22:16:12.885Z","dateUpdated":"2026-11-02T22:16:12.885Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-02T22:16:12.885Z"},"datePublic":"2026-09-07T00:00:00.000Z","title":"PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Stack-based Buffer Overflow","cweId":"CWE-121","type":"CWE"}]}],"affected":[{"vendor":"PyMuPDF","product":"PyMuPDF","defaultStatus":"unaffected","versions":[{"version":"1.25.3","lessThan":"2.0","status":"affected","versionType":"custom"}],"packageURL":"pkg:pypi/pymupdf","repo":"https://github.com/pymupdf/PyMuPDF"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/pymupdf/PyMuPDF/issues/5112","tags":["issue-tracking"],"name":"GitHub Issue #5112"},{"url":"https://github.com/pymupdf/PyMuPDF/issues/5173","tags":["issue-tracking","technical-description"],"name":"GitHub Issue #5173"},{"url":"https://github.com/pymupdf/PyMuPDF/commit/d4298ead84ceeae1c9065c81cd9a275a1b092f5e","tags":["patch"],"name":"Patch Commit"},{"url":"https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797","tags":["technical-description"]},{"url":"https://github.com/pymupdf/PyMuPDF/releases/tag/2.0","tags":["release-notes"],"name":"PyMuPDF 2.0 Release Notes"},{"url":"https://github.com/pymupdf/PyMuPDF","tags":["product"]},{"name":"VulnCheck Advisory: PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/pymupdf-1.25.3-before-2.0-stack-buffer-overflow-via-add-freetext-annot-callout"}],"credits":[{"lang":"en","value":"k3rn3lbr3ach3r","type":"finder"},{"lang":"en","value":"Dilanka Kaushal Hewage (r3vpwnx)","type":"analyst"}],"x_generator":{"engine":"vulncheck-endgame"}}}}