CVE-2021-26237

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*", "matchCriteriaId": "EF5DB16A-3B41-4691-8CE4-B8A98FA43CA2", "versionEndIncluding": "7.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "FastStone Image Viewer <= 7.5 is affected by a user mode write access violation at 0x00402d7d, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution."}, {"lang": "es", "value": "FastStone Image Viewer versiones anteriores incluyendo a 7.5, est\u00e1 afectado por una infracci\u00f3n de acceso de escritura en modo de usuario en 0x00402d7d, que se desencadena cuando un usuario abre o visualiza un archivo CUR malformado que el archivo FSViewer.exe maneja inapropiadamente.&#xa0;Unos atacantes podr\u00edan explotar este problema para una Denegaci\u00f3n de Servicio (DoS) o posiblemente para lograr una ejecuci\u00f3n de c\u00f3digo"}], "id": "CVE-2021-26237", "lastModified": "2026-06-17T03:42:59.950", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-18T14:15:13.943", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://voidsec.com/advisories/cve-2021-26237-faststone-image-viewer-v-7-5-user-mode-write-access-violation/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://voidsec.com/advisories/cve-2021-26237-faststone-image-viewer-v-7-5-user-mode-write-access-violation/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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