Authenticated remote code execution
Published Mar 9, 2022 · Updated Jul 8, 2025
Remote code execution in Microsoft Exchange Server 2013, 2016, and 2019 allows remote authenticated users to execute arbitrary code. Microsoft has not published the affected component or the wrong operation performed on attacker-controlled input. Valid Exchange credentials and network reachability are required; successful exploitation executes code in the targeted server account's context.
Summary
What happened
Remote code execution in Microsoft Exchange Server 2013, 2016, and 2019 allows remote authenticated users to execute arbitrary code. Microsoft has not published the affected component or the wrong operation performed on attacker-controlled input. Valid Exchange credentials and network reachability are required; successful exploitation executes code in the targeted server account's context.
The record
- CVE
- CVE-2022-23277
- Published
- Mar 9, 2022
- Updated
- Jul 8, 2025
- Vendor
- Microsoft
- Product
- Microsoft Exchange Server 2016 Cumulative Update 21
- Classifications
- T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 9, 2022CVE publishedPublication date reported by the CVE source.
- Jul 8, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.01.0 <15.01.2308.027
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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