{"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"}}}}