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CVE-2026-66324

Microsoft Edge (Chromium-based) Spoofing Vulnerability

MEDIUM
6.5
CVSS Score
Published: August 28, 2026 at 05:45 PM UTC
Updated: October 21, 2026 at 08:54 PM UTC
3 products affected across 1 vendorEdge ChromiumEdgeEdge IOS

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Edge Chromium· Microsoft
95%
v < 152.0.4191.53*1.0.01.0.0.0
Affected range stops below 152.0.4191.52, so it looks safe — our inference, not a vendor statement
Affected range stops below 152.0.4191.53, so it looks safe — our inference, not a vendor statement
Edge· Microsoft
90%
1.0.0.0
Affected range stops below 152.0.4191.52, so it looks safe — our inference, not a vendor statement
Edge IOS· Microsoft
90%
1.0.0.0
Affected range stops below 152.0.4191.52, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66324

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-73

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