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CVE-2026-62911
- EPSS 0.72%
- Published 11.08.2026 17:06:27
- Last modified 02.09.2026 04:18:00
- Findings
Microsoft Exchange Server Elevation of Privilege Vulnerability
Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Data is provided by the National Vulnerability Database (NVD)
Microsoft ≫ Exchange Server Version 2016 Update -
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Microsoft ≫ Exchange Server Version 2019 Update -
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Microsoft ≫ Exchange Server Subscription Edition Version < 15.02.2562.046
VulnDex Vulnerability Enrichment
This information is available to logged-in users. 
Login
Login| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.72% | 0.506 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| Microsoft | 8 | 2.1 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
|
CWE-294 Authentication Bypass by Capture-replay
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
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A VulnDex account is required to access Vulnerability Intelligence.
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https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62911
https://github.com/hypnguyen1209/CVE-2026-62911