Description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
Published: 2026-07-03
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A type confusion flaw (CWE‑843) in Microsoft Edge (Chromium‑based) allows an unauthorized attacker to bypass a security feature over a network. The issue occurs when the browser processes a resource that uses an incompatible type. The CVE description indicates that this type confusion can bypass a built‑in protection mechanism, potentially allowing further exploitation. The description does not mention exposure of secrets or privilege escalation.

Affected Systems

All released builds of Microsoft Edge (Chromium‑based) are impacted. The CNA description provides no version exemptions, so every current and past version deployed in an environment should be considered vulnerable until a vendor patch is applied.

Risk and Exploitability

The CVSS score of 8.3 indicates a high‑severity issue. The EPSS score of less than 1% suggests that exploitation is unlikely, and the vulnerability is not listed in CISA’s KEV catalog. Based on the description, the attacker would need to deliver specially crafted content over the network to the victim’s Edge browser to bypass the security feature.

Generated by OpenCVE AI on July 17, 2026 at 09:32 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Microsoft Edge (Chromium‑based) to the latest release that includes the CVE‑2026‑58295 fix.
  • If a patch cannot be applied immediately, consider restricting the browser’s behavior that may be bypassed, such as disabling problematic content types if configurable.
  • Apply network segmentation or firewall rules to limit which external sites the Edge browser can reach, reducing the opportunity for an attacker to deliver malicious content.

Generated by OpenCVE AI on July 17, 2026 at 09:32 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 06 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
Title Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
First Time appeared Microsoft
Microsoft edge Chromium
Weaknesses CWE-843
CPEs cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft edge Chromium
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Edge Chromium
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-07-22T20:34:31.664Z

Reserved: 2026-06-29T21:59:30.871Z

Link: CVE-2026-58295

cve-icon Vulnrichment

Updated: 2026-07-06T16:25:57.575Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-17T09:45:04Z

Weaknesses
  • CWE-843

    Access of Resource Using Incompatible Type ('Type Confusion')