Is CVE-2026-57974 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-57974 being exploited in the wild.

How severe is CVE-2026-57974?

High severity, with a CVSS score of 8.8, published 3 July 2026.

Which products and versions are affected?

Microsoft Edge 1.0.0.0 to 150.0.4078.48.

Is there a fix for CVE-2026-57974?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-57974 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-57974?

Check whether you run Microsoft Edge at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-57974: Microsoft Edge integer overflow remote code execution

CVE-2026-57974 · Severity: high · CVSS 8.8 · Published 2026-07-03

Microsoft Edge, a widely used web browser, is affected by a security flaw that could allow an attacker to run malicious code on a user's computer. This typically occurs if a user is tricked into visiting a specially crafted website. If successful, an attacker could gain control over the system, potentially leading to data theft or further malware installation.

Technologies: Microsoft Edge. Vendors: Microsoft.

Quick answers

Is CVE-2026-57974 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-57974 being exploited in the wild.
How severe is CVE-2026-57974?: High severity, with a CVSS score of 8.8, published 3 July 2026.
Which products and versions are affected?: Microsoft Edge 1.0.0.0 to 150.0.4078.48.
Is there a fix for CVE-2026-57974?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-57974 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-57974?: Check whether you run Microsoft Edge at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is classified as an integer overflow or wraparound (CWE-190) within the Chromium-based engine of Microsoft Edge. The flaw is exploitable over the network and requires minimal user interaction, such as a user visiting a malicious webpage. An attacker can leverage this memory corruption issue to achieve remote code execution (RCE) in the context of the browser process. The vulnerability affects versions prior to 150.0.4078.48, and Microsoft has released updates to address the issue.

Affected products

Microsoft Edge (Chromium-based) 1.0.0.0 to 150.0.4078.48

Timeline

2026-07-03: advisory: Initial publication of CVE-2026-57974 by Microsoft and NVD.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57974

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