CVE-2026-45495
CWE-20Published: May 18, 2026· Updated: May 19, 2026
Official Description
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Risk Analysis
This critical vulnerability in Microsoft Edge (Chromium-based) allows for remote code execution. With a CVSS score of 9.8, this flaw poses a severe risk, enabling an attacker to execute arbitrary code on the affected system. The absence of an EPSS score means the exploitation likelihood is not yet assessed, but the high CVSS score demands immediate attention.
No public exploit is currently known for this vulnerability. Given the network attack vector and low attack complexity, this flaw is remotely exploitable without user interaction.
Users should ensure Microsoft Edge (Chromium-based) is updated to the latest available version to mitigate this remote code execution vulnerability.
Technical Analysis
CVE-2026-45495 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-45495 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts