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CVE-2026-70341

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

No known exploitation. EPSS puts it in the 51st percentile. Fixed in 152.0.4191.52.

CVSS 3.18.5HighEPSS percentile51st0.6% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix152.0.4191.52Upgrade to this build
Check it yourself

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Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft EdgeAffected: ≥ 1.0.0.0, < 152.0.4191.52Upgrade to: 152.0.4191.52Stated by: CVE record
  • Microsoft Edge for AndroidAffected: ≥ 1.0.0.0, < 152.0.4191.52Upgrade to: 152.0.4191.52Stated by: CVE record
  • Microsoft Edge for iOSAffected: ≥ 1.0.0.0, < 152.0.4191.52Upgrade to: 152.0.4191.52Stated by: CVE record
  • Microsoft Edge for LinuxAffected: ≥ 1.0.0, < 152.0.4191.52Upgrade to: 152.0.4191.52Stated by: CVE record
  • Microsoft Edge for MACAffected: ≥ 1.0.0.0, < 152.0.4191.52Upgrade to: 152.0.4191.52Stated by: CVE record

Versions as the sources state them. 2 more products have version data. Full version matrix after sign-in

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What it is

From the CVE record

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS51st
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.6% chance of exploitation activity in the next 30 days, which ranks it in the 51st percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

11 events over 47 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Patch availablerecord updated
  3. Record updated
  4. Record updatedrecord updated
  5. Publishedweakness classified, att&ck mapped, record updated

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Scored 8.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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