EUVD-2026-41576
GHSA-4w42-h73x-mj6m
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
Network-delivered XSS needing victim interaction (UI:R, PR:N, AC:L); spoofing yields high integrity impact and low confidentiality, no availability effect, scope unchanged.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
AnalysisAI
Spoofing in Microsoft Edge (Chromium-based) arises from a cross-site scripting (CWE-79) flaw that lets a network-based, unauthenticated attacker inject script into a generated web page, producing a convincing spoofed browser context after the victim interacts with malicious content. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R, C:L/I:H) reflects a high-integrity spoofing impact gated only by user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively interact with attacker-controlled web content in Microsoft Edge (Chromium-based) - the CVSS vector's UI:R confirms user interaction is mandatory, so this cannot be triggered without the target loading and engaging with a malicious or compromised page. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are moderate and internally consistent: the CVSS 3.1 base score is 7.1 with a network attack vector, low complexity, and no privileges required, but exploitation requires user interaction (UI:R), which meaningfully lowers real-world risk versus a zero-click flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts or delivers a malicious web page (or a link to one) that abuses the improper input neutralization to inject controlled markup/script into the Edge-rendered page. When the victim navigates to and interacts with the page (UI:R), the browser presents spoofed or manipulated content - for example a forged trust indicator or overlaid UI - that the user believes is legitimate. … |
| Remediation | Patch available per vendor advisory: update Microsoft Edge to the fixed build published by Microsoft in the MSRC update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57977 (exact fixed version not specified in the provided data - verify the current stable/extended stable channel). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Document all Microsoft Edge deployments and versions across the organization. …
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Security-feature bypass in Microsoft Edge (Chromium-based) versions prior to 150.0.4078.48 lets a remote, unauthenticate
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Remote code execution in Microsoft Edge (Chromium-based) allows an unauthenticated attacker to run arbitrary code by lur
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Remote code execution in Microsoft Edge (Chromium-based) before version 150.0.4078.48 allows an unauthenticated remote a
Remote code execution in Microsoft Edge (Chromium-based) stems from a use-after-free (CWE-416) memory-corruption flaw th
Remote code execution in Microsoft Edge (Chromium-based) lets an unauthenticated network attacker run arbitrary code by
Remote code execution in Microsoft Edge (Chromium-based) before 150.0.4078.48 allows an unauthenticated attacker to run
Privilege elevation in Microsoft Edge (Chromium-based) lets a network attacker escalate privileges by luring a victim in
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Remote code execution in Microsoft Edge (Chromium-based) allows an unauthorized attacker to run arbitrary code when a vi
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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