EUVD-2026-52524
GHSA-jxgm-6gw2-5xw5
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Authorized attacker language confirms PR:L; network vector and low complexity align with browser-based network delivery; vendor-confirmed code execution warrants C:H/I:H/A:H with unchanged scope.
Primary rating from Vendor (microsoft).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
6DescriptionNVD
Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution via buffer over-read in Microsoft Edge (Chromium-based) versions prior to 151.0.4129.59 affects authenticated network attackers (PR:L per CVSS). The CWE-126 flaw allows an authorized attacker to corrupt memory and execute arbitrary code within the browser process over a network channel. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated attacker (PR:L per CVSS, consistent with the description's 'authorized attacker' language), meaning a fully unauthenticated external attacker cannot directly trigger the flaw. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (High) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H indicates low-complexity, no-user-interaction network exploitation with full confidentiality, integrity, and availability impact - but requires a low-privileged authenticated session (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Microsoft Edge (Chromium-based) to version 151.0.4129.59 or later, which contains the vendor-released patch per the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66312. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running Microsoft Edge and their current versions through endpoint discovery tools; immediately notify users that a critical vulnerability requires urgent patching. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Security-feature bypass in Microsoft Edge (Chromium-based) versions prior to 150.0.4078.48 lets a remote, unauthenticate
Remote code execution in Microsoft Edge (Chromium-based) before 151.0.4129.59 allows a network attacker to run arbitrary
Remote code execution in Microsoft Edge (Chromium-based) prior to version 151.0.4129.59 is achievable by an unauthentica
Remote code execution in Microsoft Edge (Chromium-based) stems from a use-after-free memory corruption flaw (CWE-416) th
Remote code execution in Microsoft Edge (Chromium-based) allows an unauthenticated attacker to run arbitrary code by lur
Remote code execution in Microsoft Edge (Chromium-based) stems from a heap-based buffer overflow (CWE-122) that a networ
Remote code execution in Microsoft Edge (Chromium-based) before version 150.0.4078.48 allows an unauthenticated remote a
Remote code execution in Microsoft Edge (Chromium-based) is enabled by a type confusion vulnerability (CWE-843) that can
Remote code execution in Microsoft Edge (Chromium-based) stems from a use-after-free (CWE-416) memory-corruption flaw th
Remote code execution in Microsoft Edge (Chromium-based) lets an unauthenticated network attacker run arbitrary code by
Remote code execution in Microsoft Edge (Chromium-based) before 150.0.4078.48 allows an unauthenticated attacker to run
Privilege elevation in Microsoft Edge (Chromium-based) lets a network attacker escalate privileges by luring a victim in
Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
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