8.8

CVE-2022-23277: microsoft exchange_server

CVSS: 8.8v3.1HighModified
Published 09-03-2022Last modified 08-07-2025
Open JSON

Vulnerability summary

CVE-2022-23277 is a high (CVSS 8.8) vulnerability in microsoft exchange_server. EPSS estimates a 41.11% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
53/100
0100
High · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
41.11%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1metasploit

Timeline

  1. 09-03-2022
    PublishedVulnerability first disclosed.
  2. 08-07-2025
    Last modifiedVulnerability information updated.

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

41.11%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 41.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
41.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • MetasploitMetasploitremoteVerified

    Microsoft Exchange Server ChainedSerializationBinder RCE

    exploit/windows/http/exchange_chainedserializationbinder_rce

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft6 products

1 vendor · 6 products

References

1 links