CyberSecBulletin
CVE-2026-96187NVD status: Analyzed

Microsoft Edge (Chromium-based): Access of Resource Using Incompatible Type

Published Updated By the CyberSecBulletin desk

CVE-2026-96187 is a high-severity access of resource using incompatible type vulnerability in Microsoft Edge (Chromium-based) from Microsoft, with a CVSS 3.1 base score of 7.4 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 155.0.4283.45 as the first without the flaw, so updating Microsoft Edge (Chromium-based) to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.5% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Microsoft Edge (Chromium-based) to 155.0.4283.45 or a later version.
  2. Update Edge Chromium to 155.0.4283.45 or a later version.
  3. Read the advisory on msrc.microsoft.com for workarounds and exact fixed builds.
  4. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  5. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
MicrosoftMicrosoft Edge (Chromium-based)1.0.0.0 up to, but not including, 155.0.4283.45155.0.4283.45
MicrosoftEdge Chromiumbefore 155.0.4283.45155.0.4283.45

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N. Scored by CNA (microsoft.com).

Official description

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Access of Resource Using Incompatible Type

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

More Access of Resource Using Incompatible Type vulnerabilities (CWE-843)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Microsoft Edge (Chromium-based)

All Microsoft Edge (Chromium-based) vulnerabilities

Recent Access of Resource Using Incompatible Type vulnerabilities

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