Quick answers
- Is CVE-2026-69486 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69486 being exploited in the wild.
- How severe is CVE-2026-69486?
- High severity, with a CVSS score of 8.8, published 15 September 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-69486?
- 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-2026-69486 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-69486?
- Check whether you run Microsoft Edge or Microsoft Edge Chromium 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 heap-based buffer overflow vulnerability exists in the memory management of Microsoft Edge (Chromium-based). The vulnerability allows an attacker to write beyond allocated heap memory boundaries, leading to arbitrary code execution. The attack requires no authentication and can be triggered remotely when a user visits a malicious website or opens malicious content. An attacker can exploit this to achieve code execution with the privileges of the Edge browser process. Microsoft has released or will release security patches to address this vulnerability.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-09-15: disclosed