Critical severity · published May 18, 2026
CVE-2026-45495
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
9.8
CVSS
1%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Microsoft Edge (Chromium-based) · Microsoft
1.0.0.0 before 148.0.3967.70 · source: vendor
EC
Edge Chromium · Microsoft
before 148.0.3967.70 · source: NVD
In the news
VulnerabilityHigh
ZDI-26-331: (Pwn2Own) Microsoft Edge Feedback Log File Handling Directory Traversal Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Edge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-45495.
Jun 4, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45495
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45495
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