CVE-2026-66314
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk51th percentile - higher than 51% of all known CVEs
Summary
A time-of-check time-of-use (TOCTOU) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Risk Assessment
The risk includes potential leakage of sensitive user data from the browser, which could lead to privacy breaches. The attack can be performed remotely, increasing its reach.
Recommendation
It is recommended to update Microsoft Edge to the latest patched version. Also monitor vendor security advisories.
Other vulnerabilities in Microsoft Edge
See all- CVE-2017-11861High
A vulnerability in the Microsoft Edge scripting engine in Windows 10 and Windows Server allows an attacker to gain the same user rights as the current user due to improper handling of objects in memory.
- CVE-2017-11845High
A vulnerability in Microsoft Edge on Windows 10 1703 allows an attacker to execute arbitrary code in the context of the current user due to improper handling of objects in memory.
- CVE-2017-11800High
Microsoft Edge in Windows 10 Gold, 1511, 1607, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to how the scripting engine handles objects in memory.
- CVE-2017-11798High
Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, known as 'Scripting Engine Memory Corruption Vulnerability'.
- CVE-2017-8757High
Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way Microsoft Edge handles objects in memory.
- CVE-2017-8756High
Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to the way Microsoft Edge accesses objects in memory.
- CVE-2017-8755High
Microsoft Edge in Windows 10 (1511, 1607, 1703) and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to the way the scripting engine handles objects in memory, known as 'Scripting Engine Memory Corruption Vulnerability'.
- CVE-2017-8752High
Microsoft Edge in Windows 10 (1511, 1607, 1703) and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user due to the way the Microsoft Edge scripting engine handles objects in memory.
- CVE-2017-8751High
A vulnerability in Microsoft Edge in Windows 1703 allows an attacker to execute arbitrary code in the context of the current user due to the way Microsoft Edge accesses objects in memory.
- CVE-2017-8740High
Microsoft Edge in Windows 10 version 1703 allows an attacker to execute arbitrary code in the context of the current user due to the way the Microsoft Edge scripting engine handles objects in memory.
Original NVD description (English source)
Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.