Description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Published: 2026-07-03
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A use‑after‑free flaw in Microsoft Edge (Chromium‑based) allows an attacker to execute arbitrary code within the browser process. The vulnerability, identified as CWE‑416, can be leveraged over a network connection, providing remote code execution capabilities to an unauthorized attacker.

Affected Systems

Microsoft Edge (Chromium‑based) installations that have not yet received the latest Microsoft update are vulnerable. No specific version ranges are provided, so any current build that lacks the applied security patch may be impacted.

Risk and Exploitability

The CVSS score of 7.5 indicates a high severity issue. An EPSS score of less than 1% suggests that, as of the latest data, the probability of exploitation in the wild is very low, and the vulnerability is not listed in the CISA KEV catalog. The flaw can be triggered remotely by an adversary who can communicate with the victim’s browser, making it a significant risk in environments where the browser is exposed to untrusted networks.

Generated by OpenCVE AI on July 21, 2026 at 09:24 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Microsoft Edge (Chromium‑based) security update that addresses the use‑after‑free flaw.
  • If an update is not yet available, isolate the browser from untrusted network traffic or disable it in high‑risk environments.
  • Implement network segmentation and monitoring to detect anomalous outbound connections or processes spawned by the browser.

Generated by OpenCVE AI on July 21, 2026 at 09:24 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 06 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 03 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
Description Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Title Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft edge Chromium
Weaknesses CWE-416
CPEs cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft edge Chromium
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Edge Chromium
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-07-23T23:56:07.281Z

Reserved: 2026-06-26T17:45:44.854Z

Link: CVE-2026-57984

cve-icon Vulnrichment

Updated: 2026-07-06T11:43:29.112Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-21T09:30:04Z

Weaknesses