{"affected":[{"affectedData":[{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Avast Business Antivirus","vendor":"Avast","versions":[{"status":"affected","version":"4.5.1","versionType":"customLack of file validation in Avast Business Antivirus for Linux allows writing untrusted update "}]}],"source":"security@nortonlifelock.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write."},{"lang":"es","value":"La falta de validación de archivos en do_update_vps en Avast Business Antivirus para Linux 4.5 en Linux permite que el usuario local falsifique o altere el archivo de actualización a través de una escritura de archivo no verificada."}],"id":"CVE-2025-4134","lastModified":"2026-06-17T09:32:34.403","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.3,"impactScore":5.9,"source":"security@nortonlifelock.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2025-4134","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2025-05-28T14:06:29.597667Z","version":"2.0.3"}}]},"published":"2025-05-28T14:15:34.260","references":[{"source":"security@nortonlifelock.com","url":"https://www.gendigital.com/us/en/contact-us/security-advisories/"}],"sourceIdentifier":"security@nortonlifelock.com","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-552"}],"source":"security@nortonlifelock.com","type":"Secondary"}]}