CVE-2026-45599
Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
CSIRTS triage
- What
- Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
- Who is affected
- Users of Windows UPnP Device Host.
- Urgency
- Remediation is urgent due to the high severity and potential for remote code execution.
- Action
- Install the latest security updates for Windows.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-45599: Windows UPnP Device Host Remote Code Execution Vulnerabilitymsrc · 2026-06-09
External references
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