CVE-2026-62914: Microsoft Exchange Server Spoofing Vulnerability

highCVSS 7.3CVE-2026-62914

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.

CSIRTS triage

vendor: Microsoft product: Exchange Server Cross-site scripting

What: Cross-site scripting in Microsoft Exchange Server allows authorized attackers to perform spoofing attacks.
Who is affected: Organizations with Exchange Server deployments where attackers have prior authorization are at risk.
Urgency: High severity (CVSS 7.3) with no known exploitation; requires authenticated access, reducing immediate risk.
Action: Patch Exchange Server with the latest security update for CVE-2026-62914.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.3
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62914

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-629140.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-62914	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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