{"id":"CVE-2025-6558","published":"2025-07-15T18:15:24Z","modified":"2026-10-01T12:00:53Z","title":"Google Chromium ANGLE and GPU Improper Input Validation Vulnerability","vendor":"Google","product":"Chromium","tier":"core","eol":null,"description":{"text":"Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an improper input validation issue in the ANGLE and GPU components of Google Chromium, the browser's graphics stack. An attacker who can get a user to load a crafted HTML page can potentially escape the browser sandbox, with no authentication required but user interaction needed to open the page.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:12:53Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.10927,"percentile":0.95867,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2025-07-22","dueDate":"2025-08-12","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-6558","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-07-15","exploitedFirstSeen":"2025-07-15","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html","date":"2025-07-15"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2025-07-15"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-07-22"},{"url":"https://45734016.fs1.hubspotusercontent-na1.net/hubfs/45734016/Global%20Threat%20Report%2c%202025.pdf","date":"2025-07-28"},{"url":"https://cert.europa.eu/publications/threat-intelligence/cb25-08/","date":"2025-08-04"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"},{"url":"https://threatresearch.ext.hp.com/reviewing-zero-day-vulnerabilities-exploited-in-malware-campaigns-in-2025/","date":"2026-02-23"},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/2025-zero-day-review","date":"2026-03-05"},{"url":"https://www.redhat.com/en/resources/product-security-risk-report-2025","date":"2026-04-10"}],"evidenceTotal":10,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"openSUSE Ships Huge WebKit Update Closing More Than Two Hundred Browser Engine Flaws","url":"https://otx.alienvault.com/pulse/6ad4f5234746e0edc192b600","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"references":[{"url":"https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html","tags":["Release Notes"]},{"url":"https://issues.chromium.org/issues/427162086","tags":["Issue Tracking","Permissions Required"]},{"url":"http://seclists.org/fulldisclosure/2025/Aug/0","tags":["Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2025/Jul/30","tags":["Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2025/Jul/32","tags":["Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2025/Jul/35","tags":["Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2025/Jul/37","tags":["Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2025/08/02/1","tags":["Mailing List"]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/30/18","tags":["Mailing List"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html","tags":["Mailing List","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6558","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Input Validation","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability enables remote threat actors to escape the browser sandbox by leveraging a specially crafted HTML page.","confidence":"high"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Input Validation","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability enables remote threat actors to escape the browser sandbox by leveraging a specially crafted HTML page.","confidence":"high"},{"id":"T1497","name":"Virtualization/Sandbox Evasion","tactics":["discovery","stealth"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Input Validation","mappingType":"primary_impact","evidence":[],"comment":"This vulnerability enables remote threat actors to escape the browser sandbox by leveraging a specially crafted HTML page.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-21546","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-21546","exploited":true,"exploitedSince":"2025-07-22","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":2,"skipped":0,"earliest":"2025-07-22","earliestUrl":"https://github.com/gmh5225/CVE-2025-6558-exp","repos":[{"name":"DevBuiHieu/CVE-2025-6558-Proof-Of-Concept","url":"https://github.com/DevBuiHieu/CVE-2025-6558-Proof-Of-Concept","stars":7,"created":"2025-07-24"},{"name":"gmh5225/CVE-2025-6558-exp","url":"https://github.com/gmh5225/CVE-2025-6558-exp","stars":1,"created":"2025-07-22"}]},"first":{"date":"2025-07-22","source":"PoC-in-GitHub","url":"https://github.com/gmh5225/CVE-2025-6558-exp"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189","T1203"],"provenance":"source"},{"stage":"primary","techniques":["T1497"],"provenance":"source"}],"timeline":[{"date":"2025-07-15","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6558","provenance":"source"},{"date":"2025-07-15","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html","provenance":"source"},{"date":"2025-07-22","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/gmh5225/CVE-2025-6558-exp","provenance":"source"},{"date":"2025-07-22","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-07-22","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-21546","provenance":"source"}],"speed":{"daysToPublicExploit":7,"firstExploitFrom":"PoC-in-GitHub","daysToKev":7},"priority":{"score":68.3,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and 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