EUVD-2026-41584
GHSA-6p36-3w3p-mr82
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
Network spoofing is unauthenticated (PR:N) but realistically needs victim navigation (UI:R) and is timing-dependent (AC:H); scope changes across origins (S:C) with integrity spoofing high and no genuine availability impact.
Primary rating from Vendor (microsoft).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
Lifecycle Timeline
4DescriptionNVD
Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
AnalysisAI
Spoofing in Microsoft Edge (Chromium-based) lets a remote, unauthenticated attacker misrepresent trusted UI or content to a victim by abusing improper access control (CWE-284), per Microsoft's own advisory (MSRC CVE-2026-58286). The high CVSS 8.1 is driven by a scope-changed impact (S:C) with high integrity effect, though the AC:H rating signals the attack is not trivially reliable. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation targets Microsoft Edge (Chromium-based) over the network with no authentication (PR:N) and, per the CVSS vector, no user interaction flagged (UI:N); the primary limiting factor is high attack complexity (AC:H), meaning the attacker must satisfy conditions outside their control - likely a race, precise navigation timing, or a specific rendering state - for the spoof to land. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mixed and should be read carefully. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts or injects crafted web content that abuses the improper access-control flaw to render trusted-looking UI or content that appears to originate from a legitimate origin, then lures or races a victim's Edge browser into displaying it. Because the scope changes across a security boundary, the spoofed content can misrepresent a different origin or the browser chrome, enabling convincing phishing or trust manipulation. … |
| Remediation | Apply the vendor patch: Microsoft has released a fix, and the primary action is to update Microsoft Edge (Chromium-based) to the patched build documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58286 - the exact fixed version is not included in the supplied data and should be taken from that page. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify the scope of Microsoft Edge deployments across your environment using asset management tools. …
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Security-feature bypass in Microsoft Edge (Chromium-based) versions prior to 150.0.4078.48 lets a remote, unauthenticate
Remote code execution in Microsoft Edge (Chromium-based) stems from a use-after-free memory corruption flaw (CWE-416) th
Remote code execution in Microsoft Edge (Chromium-based) allows an unauthenticated attacker to run arbitrary code by lur
Remote code execution in Microsoft Edge (Chromium-based) stems from a heap-based buffer overflow (CWE-122) that a networ
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
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) via a type-confusion flaw (CWE-843) lets an unauthorized attack
Remote code execution in Microsoft Edge (Chromium-based) allows an unauthorized attacker to run arbitrary code when a vi
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
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