{"id":"CVE-2026-5281","published":"2026-04-01T05:16:01Z","modified":"2026-07-24T21:10:00Z","title":"Google Dawn Use-After-Free Vulnerability","vendor":"Google","product":"Dawn","tier":"core","eol":null,"description":{"text":"Use after free in Dawn in Google Chrome prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free flaw in Google's Dawn graphics component, which is part of Google Chrome, lets code inside Dawn reuse memory after it has been released. An attacker who has already compromised the renderer process can exploit it through a crafted HTML page that a user visits, with no authentication required, to execute arbitrary code.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:54Z"},"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":0.13743,"percentile":0.96505,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-04-01","dueDate":"2026-04-15","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":"This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-5281 ","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-03-31","exploitedFirstSeen":"2026-03-31","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html","date":"2026-03-31"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2026-03-31"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-04-01"},{"url":"https://ti.qianxin.com/uploads/2026/10/29/20ab59a356a884498644cff73d47a13a.pdf","date":"2026-10-29"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 2026","url":"https://otx.alienvault.com/pulse/6ae4aefab0c2191cecd41862","created":"2026-10-30"},{"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"}],"provenance":"machine"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html","tags":["Vendor Advisory"]},{"url":"https://issues.chromium.org/issues/491518608","tags":["Issue Tracking","Permissions Required"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-5281","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Malicious web page delivers exploit to browser","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted HTML page","start":157,"end":180}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Code execution within the browser client process","mappingType":"primary_impact","evidence":[{"from":"description","quote":"execute arbitrary code via a crafted HTML page","start":134,"end":180}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-17795","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-17795","exploited":true,"exploitedSince":"2026-04-01","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":2,"skipped":2,"earliest":"2026-04-02","earliestUrl":"https://github.com/umair-aziz025/CVE-2026-5281-Research-Toolkit","repos":[{"name":"umair-aziz025/CVE-2026-5281-Research-Toolkit","url":"https://github.com/umair-aziz025/CVE-2026-5281-Research-Toolkit","stars":4,"created":"2026-04-02"},{"name":"TheMalwareGuardian/CVE-2026-5281","url":"https://github.com/TheMalwareGuardian/CVE-2026-5281","stars":2,"created":"2026-04-06"}]},"first":{"date":"2026-04-02","source":"PoC-in-GitHub","url":"https://github.com/umair-aziz025/CVE-2026-5281-Research-Toolkit"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1203"],"provenance":"ai"}],"timeline":[{"date":"2026-03-31","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html","provenance":"source"},{"date":"2026-04-01","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5281","provenance":"source"},{"date":"2026-04-01","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-04-01","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-17795","provenance":"source"},{"date":"2026-04-02","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/umair-aziz025/CVE-2026-5281-Research-Toolkit","provenance":"source"}],"speed":{"daysToPublicExploit":1,"firstExploitFrom":"PoC-in-GitHub","daysToKev":0},"priority":{"score":73.5,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 214 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.3,"detail":"percentile 0.9650"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"2 PoC-in-GitHub repos"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}