CVE-2026-45500
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CSIRTS triage
- What
- Improper neutralization of input during web page generation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
- Who is affected
- Users of Microsoft Exchange Server.
- Urgency
- Remediation is medium priority due to the moderate severity of the spoofing risk.
- Action
- Apply 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 risk0.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2026-45500: Microsoft Exchange Server Spoofing Vulnerabilitymsrc · 2026-06-09
External references
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