CVE-2026-17661
Use after free in Loader in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Base score: 8.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.41%
- Percentile among all scored CVEs: 33
- Score date: 10/5/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1203Exploitation for Client Executionexecution85 % - Primary impact
T1059Command and Scripting Interpreterexecution80 %
Use-after-free (CWE-416) en Chrome con UI:R requiere que el usuario abra una página HTML maliciosa. La ejecución de código arbitrario en sandbox se logra mediante T1203 (explotación para ejecución en cliente). El impacto es T1059 (ejecución de comandos/código).
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- CWE-416
References
Raw JSON (NVD)
Show
{
"id": "CVE-2026-17661",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-17661",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-07-30T00:00:00+00:00"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "chrome-cve-admin@google.com",
"affectedData": [
{
"vendor": "Google",
"product": "Chrome",
"versions": [
{
"status": "affected",
"version": "151.0.7922.72",
"lessThan": "151.0.7922.72",
"versionType": "custom"
}
]
}
]
}
],
"published": "2026-07-30T01:16:28.090",
"references": [
{
"url": "https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "chrome-cve-admin@google.com"
},
{
"url": "https://issues.chromium.org/issues/497451790",
"tags": [
"Permissions Required"
],
"source": "chrome-cve-admin@google.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "chrome-cve-admin@google.com",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Use after free in Loader in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)"
}
],
"lastModified": "2026-08-10T14:13:26.117",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5306E563-AFD7-43CB-AFC8-CE1F449BA94C",
"versionEndExcluding": "151.0.7922.72"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "chrome-cve-admin@google.com"
}