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Microsoft Edge CVE-2026-57985

| EUVDEUVD-2026-41650 HIGH
Improper Input Validation (CWE-20)
2026-07-03 microsoft GHSA-mp46-jq23-75j9
8.8
CVSS 3.1 · NVD
Temporal: 6.6
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Severity by source

Vendor (microsoft) PRIMARY
HIGH
qualitative
NVD
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CIRCL (temporal)
6.6 MEDIUM
cvss
vuln.today AI
8.8 HIGH

Network-delivered browser RCE needing only a page visit (UI:R), no auth (PR:N), low complexity, with full loss of confidentiality, integrity, and availability in the browser context.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Analysis Updated
Jul 07, 2026 - 15:43 vuln.today
v3 (cvss_changed)
Analysis Updated
Jul 07, 2026 - 15:43 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Jul 07, 2026 - 15:37 vuln.today
cvss_changed
CVSS changed
Jul 07, 2026 - 15:37 NVD
7.6 (HIGH) 8.8 (HIGH)
Analysis Generated
Jul 03, 2026 - 21:12 vuln.today
CVE Published
Jul 03, 2026 - 20:35 cve.org
HIGH 7.6

DescriptionNVD

Improper input validation in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

AnalysisAI

Remote code execution in Microsoft Edge (Chromium-based) before version 150.0.4078.48 allows an unauthenticated remote attacker to run arbitrary code when a victim is lured into loading attacker-controlled web content. The flaw stems from improper input validation (CWE-20) and carries a high-severity CVSS of 8.8, though it requires user interaction and has no public exploit identified at time of analysis. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Host malicious web content
Delivery
Lure victim to load page
Exploit
Trigger input-validation flaw in Edge
Execution
Execute arbitrary code in browser context
Impact
Compromise user data and session

Vulnerability AssessmentAI

Exploitation Exploitation requires the victim to load attacker-controlled web content in a vulnerable Microsoft Edge build (any version below 150.0.4078.48) - the CVSS UI:R metric means user interaction such as visiting a malicious or compromised web page is mandatory, which is the key limiting factor. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) describes a network-reachable, low-complexity, unauthenticated attack whose only meaningful gate is required user interaction (UI:R) - i.e. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker hosts a malicious web page (or injects malicious content into an ad or compromised site) that delivers crafted input triggering the input-validation flaw in Edge's content handling. A victim running a vulnerable Edge build visits or is redirected to the page (satisfying UI:R) and, with no further clicks required beyond loading the content, the attacker gains arbitrary code execution in the browser context. …
Remediation Vendor-released patch: update Microsoft Edge to 150.0.4078.48 or later, which contains the fix per Microsoft's advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57985. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Assess Microsoft Edge deployment scope and versions across the organization; alert users to exercise caution with untrusted websites. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-57985 vulnerability details – vuln.today

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