Quick answers
- Is CVE-2026-70341 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-70341 being exploited in the wild.
- How severe is CVE-2026-70341?
- High severity, with a CVSS score of 8.5, published 11 September 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-70341?
- 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-2026-70341 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-70341?
- 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
A use-after-free vulnerability exists in Microsoft Edge (Chromium-based) that allows an authorized attacker to execute arbitrary code over the network. This type of vulnerability occurs when a program references memory that has been freed, potentially allowing an attacker to overwrite freed memory with malicious code. The attack requires network connectivity and authorization credentials. Successful exploitation could result in remote code execution with the privileges of the user running Edge. Microsoft has released security updates to patch this vulnerability.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-09-11: disclosed