EUVD-2026-67847
GHSA-c7hh-86mm-w7m5
Severity by source
AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
Description confirms information disclosure only; official I:L is not supported by the disclosure-only characterization, so I:N is independently assessed.
Primary rating from Vendor (microsoft).
CVSS VectorNVD
Lifecycle Timeline
4DescriptionNVD
Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.
AnalysisAI
Copilot Chat in Microsoft Edge (Chromium-based) exposes a race condition that enables an authorized, low-privileged attacker to disclose information across a component scope boundary over the network. The flaw arises from improper synchronization of concurrent access to a shared resource within the Copilot Chat feature, producing partial confidentiality and, per the official CVSS vector, limited integrity exposure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to be an authorized (authenticated) user of Microsoft Edge - the CVSS PR:L metric confirms low-privilege credentials are sufficient, but unauthenticated access is not an attack path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 4.4 (Medium) with vector AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N encodes meaningful real-world constraints that substantially reduce actual exploitability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | A vendor-released patch is available per the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58616; the specific patched Edge version number is not independently confirmed from the data supplied, so administrators should apply the latest available Microsoft Edge update and cross-reference the fix version against the MSRC advisory directly. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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) before 151.0.4129.59 allows a network attacker to run arbitrary
Remote code execution via buffer over-read in Microsoft Edge (Chromium-based) versions prior to 151.0.4129.59 affects au
Remote code execution in Microsoft Edge (Chromium-based) prior to version 151.0.4129.59 is achievable by an unauthentica
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) is enabled by a type confusion vulnerability (CWE-843) that can
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
Same weakness CWE-362 – Race Condition
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
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