CVE-2026-66324medium6.5

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Impact

Microsoft Edge (Chromium-based) versions less than 152.0.4191.53 are affected by a spoofing vulnerability due to external control of file name or path. An attacker can perform spoofing over a network. The weakness is described as CWE-73: External Control of File Name or Path.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Microsoft · microsoft

Microsoft Edge (Chromium-based)

1 range

microsoft version evidence

Check a product version

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affected

1.0.0.0 → before 152.0.4191.53

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft Edge for Android

1 range

microsoft version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.0.0.0 → before 152.0.4191.52

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft Edge for iOS

1 range

microsoft version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.0.0.0 → before 152.0.4191.52

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft Edge for Linux

1 range

microsoft version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.0.0 → before 152.0.4191.52

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft Edge for MAC

1 range

microsoft version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.0.0.0 → before 152.0.4191.52

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft Edge for Windows

1 range

microsoft version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.0.0.0 → before 152.0.4191.52

custom versions

Other versions: unknown

Original source description

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

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance · not supplied

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-66324

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-73 ↗

CWE-73: External Control of File Name or Path

microsoft

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

microsoft · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:*

From (inclusive): 1.0.0.0

After:

Through (inclusive):

Before: 152.0.4191.52

Vulnerable product

cpe:2.3:a:microsoft:edge:*:*:*:*:*:mac:*:*

From (inclusive): 1.0.0.0

After:

Through (inclusive):

Before: 152.0.4191.52

Vulnerable product

cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:*

From (inclusive): 1.0.0.0

After:

Through (inclusive):

Before: 152.0.4191.52

Vulnerable product

cpe:2.3:a:microsoft:edge:*:*:*:*:*:linux:*:*

From (inclusive): 1.0.0

After:

Through (inclusive):

Before: 152.0.4191.52

Vulnerable product

cpe:2.3:a:microsoft:edge:*:*:*:*:*:windows:*:*

From (inclusive): 1.0.0.0

After:

Through (inclusive):

Before: 152.0.4191.52

Vulnerable product

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*

From (inclusive): 1.0.0.0

After:

Through (inclusive):

Before: 152.0.4191.53

Original applicability statements

[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:*",
            "versionStartIncluding": "1.0.0.0",
            "versionEndExcluding": "152.0.4191.52"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:mac:*:*",
            "versionStartIncluding": "1.0.0.0",
            "versionEndExcluding": "152.0.4191.52"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:*",
            "versionStartIncluding": "1.0.0.0",
            "versionEndExcluding": "152.0.4191.52"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:linux:*:*",
            "versionStartIncluding": "1.0.0",
            "versionEndExcluding": "152.0.4191.52"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:windows:*:*",
            "versionStartIncluding": "1.0.0.0",
            "versionEndExcluding": "152.0.4191.52"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "1.0.0.0",
            "versionEndExcluding": "152.0.4191.53"
          }
        ]
      }
    ]
  }
]

Contributing organizations · 2

microsoft

Assigning organization

2026-10-30

CISA-ADP

Additional data publisher

2026-08-31

What changed

Follow changes

No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66324

vendor-advisorymicrosoft

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 09:10:30 UTC

microsoft · CVSS:3.1 · 6.5

Assessment vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: 0.92% estimated probability in the next 30 days. 2026-10-28 · FIRST EPSS.

CISA-ADP · SSVC

CISA Coordinator · 2026-08-31

Exploitation: none
Automatable: no
Technical Impact: partial

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record details

Published: 28/08/2026, 17:45:32 UTC
Modified: 30/10/2026, 17:23:04 UTC
Last imported by cve.new: 30/10/2026, 18:54:51 UTC
Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-66324

Enrichment coverage

NVDAvailable

Checked 29/10/2026, 01:20:35 UTC

GHSAAvailable

Checked 29/10/2026, 01:20:34 UTC

EUVDRefresh failed

Previous evidence retained where available.

EPSSAvailable

Checked 29/10/2026, 01:20:35 UTC

Additional source evidence

GitHub Advisory Database · GHSA-rr72-rhff-22vh

CVSS 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Checked 29/10/2026, 01:20:34 UTC

FIRST EPSS · CVE-2026-66324

EPSS 0.92% probability of exploitation in the next 30 days. Percentile: 60.22% · 2026-10-28

Checked 29/10/2026, 01:20:35 UTC

NVD · CVE-2026-66324

CVSS 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Checked 29/10/2026, 01:20:35 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

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Microsoft Edge (Chromium-based) Spoofing Vulnerability

Impact

Affected packages

Affected products

Microsoft Edge (Chromium-based)

affected

unaffected

unknown

Microsoft Edge for Android

affected

unaffected

unknown

Microsoft Edge for iOS

affected

unaffected

unknown

Microsoft Edge for Linux

affected

unaffected

unknown

Microsoft Edge for MAC

affected

unaffected

unknown

Microsoft Edge for Windows

affected

unaffected

unknown

Original source description

Inside the record

Evidence available

Original records

Underlying weaknesses

Environment requirements

What changed

References