CVE-2026-62910: Microsoft Exchange Server Elevation of Privilege Vulnerability
Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CSIRTS triage
- What
- Resource injection in Microsoft Exchange Server permits network-based privilege escalation by authorized users.
- Who is affected
- Deployed Microsoft Exchange Server instances with authenticated access.
- Urgency
- High severity (CVSS 7.2); not exploited but authenticated privilege escalation requires urgent remediation.
- Action
- Apply the latest Microsoft Exchange Server security patch.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62910
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-2026-629100.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-62910 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Microsoft Exchange Server: Multiple vulnerabilitiescert-bund
- unknownNCSC-2026-0289 [1.00] [M/H] Vulnerabilities fixed in Microsoft Exchange Serverncsc-nl
- unknownMultiple vulnerabilities in Microsoft products (August 12, 2026)cert-fr-avis
- highCVE-2026-62910: Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server a…nvd
Recent advisories for Microsoft Exchange Server
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Microsoft Exchange Server: Multiple vulnerabilitiescert-bund · 2026-08-12
- unknownNCSC-2026-0289 [1.00] [M/H] Vulnerabilities fixed in Microsoft Exchange Serverncsc-nl · 2026-08-12
- mediumCVE-2026-65813: Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker …nvd · 2026-08-11
- mediumCVE-2026-62915: Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a s…nvd · 2026-08-11
- highCVE-2026-62914: Improper neutralization of input during web page generation ('cross-site scripting') in Micros…nvd · 2026-08-11
- highCVE-2026-62913: Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execu…nvd · 2026-08-11
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