Microsoft Exchange Server
CVE-2018-8151 — Microsoft Exchange Memory Corruption Vulnerability
Executive Summary
An information disclosure vulnerability exists when Microsoft Exchange improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the remote system. To exploit the vulnerability, an attacker would send a specially-crafted email to an affected Exchange Server. The security update addresses the vulnerability by modifying how Microsoft Exchange handles objects in memory.
Overview
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
EPSS Score
0.08769
probability of exploitation in the next 30 days
0.94694 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 21 | 4091243 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft Exchange Server 2013 Cumulative Update 19 | 4092041 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft Exchange Server 2013 Cumulative Update 20 | 4092041 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft Exchange Server 2013 Service Pack 1 | 4092041 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft Exchange Server 2016 Cumulative Update 8 | 4092041 (Security Update) |
Important | Information Disclosure | Maybe |
| Microsoft Exchange Server 2016 Cumulative Update 9 | 4092041 (Security Update) |
Important | Information Disclosure | Maybe |
Patches
2 patches
| Article | Type | Restart |
|---|---|---|
4091243 |
Security Update | Maybe |
4092041 |
Security Update | Maybe |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
References
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