CVE-2026-58283 Microsoft Edge (Chromium-based) Spoofing Vulnerability
An attacker can exploit a type confusion flaw in Microsoft Edge to perform spoofing attacks over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-58283?
CVE-2026-58283 is a high-severity vulnerability in Microsoft Edge Chromium, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Weakness: CWE-843
Which versions are affected by CVE-2026-58283?
It affects 1 product.
Products include Microsoft Edge Chromium.
How do I fix CVE-2026-58283?
No fix has been published for CVE-2026-58283 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-58283 being exploited?
There is no known exploitation of CVE-2026-58283 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Edge Chromium
- CVE-2024-21326 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-35618 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-36735 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2022-33649 Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
- CVE-2026-58289 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Sources
Also known as GHSA-9h2j-pmwx-xhhx.