Quick answers
- Is CVE-2026-58643 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-58643 being exploited in the wild.
- How severe is CVE-2026-58643?
- Medium severity, with a CVSS score of 6.1, published 16 July 2026.
- Which products and versions are affected?
- Microsoft Windows Admin Center 1809.0 to 2511.
- Is there a fix for CVE-2026-58643?
- 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-2026-58643 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-58643?
- Check whether you run Microsoft Windows Admin Center 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 reflected cross-site scripting (XSS) vulnerability exists in Microsoft Windows Admin Center due to improper neutralization of user-supplied input during web page generation. An unauthenticated, remote attacker can exploit this by tricking a legitimate user into clicking a malicious link or visiting a compromised website. Successful exploitation allows the attacker to execute arbitrary script code in the context of the victim's browser session, potentially leading to session hijacking, unauthorized data access, or spoofing of administrative actions. The vulnerability is tracked as CWE-79 and affects versions starting from 1809.0 up to 2511.
Affected products
- Microsoft Windows Admin Center 1809.0 to 2511
Timeline
- 2026-07-16: disclosed
- 2026-07-16: advisory