EUVD-2026-66071
GHSA-r8p4-w8m3-48gf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Requires social-engineering the user into installing a crafted extension (UI:R); impact is a bounded sandbox-internal memory read (C:L only), with no integrity or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
3DescriptionCVE.org
Off-by-one error in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to potentially read memory inside the sandbox via a crafted Chrome extension. (Chromium security severity: Low)
AnalysisAI
Information disclosure in Google Chrome's DevTools (versions prior to 152.0.7977.65) lets a remote attacker who convinces a user to install a crafted Chrome extension read adjacent memory inside the renderer sandbox via an off-by-one error. Chromium rates the security severity as Low, and there is no public exploit identified at time of analysis; SSVC lists exploitation status as none and EPSS is negligible (0.16%, 6th percentile).
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to install an attacker-supplied crafted Chrome extension - the description explicitly states 'leveraging social engineering' via 'a crafted Chrome extension,' so successful user interaction to install that extension is the concrete prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is low despite the inflated 9.1 score in the input. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker publishes or distributes a malicious Chrome extension and uses social engineering (a lure page, fake tool, or sideloading instructions) to persuade a victim to install it. Once running, the extension triggers the off-by-one in DevTools to read one element beyond a buffer boundary, leaking small amounts of adjacent renderer memory that could contain sensitive data. … |
| Remediation | Vendor-released patch: update Google Chrome to 152.0.7977.65 or later via the Stable channel (see the Chrome release advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, notify all Chrome users about the vulnerability and the importance of avoiding untrusted extensions; inventory your organization's Chrome deployment and verify auto-update status. …
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Same weakness CWE-193 – Off-by-one Error
View allSame technique Information Disclosure
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External POC / Exploit Code
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