EUVD-2026-41137
GHSA-q4g4-rw2v-x4v7
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Network-reachable low-complexity UAF, but browser exploitation realistically needs victim to render attacker content (UI:R) and some privilege (PR:L); C/I high, A partial per vendor.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Microsoft Edge (Chromium-based) stems from a use-after-free (CWE-416) memory-corruption flaw that lets an authorized attacker run arbitrary code over a network within the browser process. Microsoft has shipped an official fix and rates it CVSS 8.3; the exploit-maturity metric is Unproven (E:U), meaning no public exploit identified at time of analysis and it is not listed in CISA KEV. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold some level of authorization (CVSS PR:L, and the description explicitly calls the actor an 'authorized attacker'), meaning it is not a fully unauthenticated internet-wide attack; the exact privilege - such as a logged-in browser session, a compromised low-privilege renderer, or authenticated access to attacker-served content - is not specified in the provided data and should be confirmed via the MSRC advisory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L yields 8.3 (High), driven by network reachability, low complexity, and high confidentiality/integrity impact, offset by a requirement for some privilege (PR:L) and only partial availability impact (A:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker lures or directs a targeted Edge user to attacker-controlled web content (or leverages an already-authorized foothold implied by PR:L) that triggers the use-after-free, corrupting heap memory to hijack a freed object and execute code in the browser process. Given AC:L, the trigger is reliable once the vulnerable code path is reached, but the temporal metric E:U indicates no public exploit code exists at time of analysis, so exploitation would require original vulnerability-research effort. |
| Remediation | Apply the vendor fix: Patch available per vendor advisory - update Microsoft Edge to the current patched Stable channel build via Edge's built-in update mechanism (edge://settings/help) or your enterprise update ring/WSUS/Intune deployment, referencing https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50521 for the exact fixed version, which is not enumerated in the provided data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Quantify Edge deployment footprint across the organization and prioritize systems handling sensitive data. …
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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) 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
Remote code execution in Microsoft Edge (Chromium-based) allows an unauthorized attacker to break out of the browser's s
Same weakness CWE-416 – Use After Free
View allSame technique Memory Corruption
View allShare
External POC / Exploit Code
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