CVE-2022-23277
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
CVE-2022-23277- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2022-28363
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
EUVD-2022-28363- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-364v-6m73-qv4g
Microsoft Exchange Server Remote Code Execution Vulnerability.
Microsoft Exchange Server Remote Code Execution Vulnerability.
- Record
GHSA-364v-6m73-qv4g- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
CVE-2022-23277- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Microsoft Exchange Server ChainedSerializationBinder RCE | 2021-12-09 |
| PoC in GitHub | 7BitsTeam/CVE-2022-23277 | 2022-10-13 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, Metasploit, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-23277 is a high vulnerability (CVSS 8.8) in Microsoft Exchange Server, published March 9, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 41.1%, the 98th percentile. No source names a fixed version.
References
msrc.microsoft.com/update-guide/vulnerability/CVE-2022-23277
nvd.nist.gov/vuln/detail/CVE-2022-23277
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-23277
packetstormsecurity.com/files/168131/Microsoft-Exchange-Server-ChainedSerializationBinder-Remote-Code-Execution.html
github.com/advisories/GHSA-364v-6m73-qv4g