CVE-2026-45583
Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
CSIRTS triage
- What
- Improper control of generation of code in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
- Who is affected
- Users of Microsoft Exchange Server.
- Urgency
- Remediation is urgent due to the high severity and potential for remote code execution.
- Action
- Install the latest security updates for Microsoft Exchange Server.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-45583: Microsoft Exchange Server Remote Code Execution Vulnerabilitymsrc · 2026-06-09
External references
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