CVE-2023-36777
Microsoft Exchange Server Information Disclosure Vulnerability
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Description
Microsoft Exchange Server Information Disclosure Vulnerability
Official description from the CVE record, published by microsoft. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
CVSS 3.1 Medium 5.7
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Attack vector: Adjacent
The attacker needs to be on the same shared network segment or a closely related one.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: Low
A basic user account is needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: None
No effect on the trustworthiness of data.
Availability impact: None
No effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Adjacent | The attacker needs to be on the same shared network segment or a closely related one. |
| Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. |
| Privileges required | Low | A basic user account is needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Unchanged | The impact stays within the vulnerable component. |
| Confidentiality impact | High | Serious or total effect on the secrecy of data. |
| Integrity impact | None | No effect on the trustworthiness of data. |
| Availability impact | None | No effect on availability. |
CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.
EPSS
- Score
- 0.52011 (52.0% probability)
- Percentile
- 99.0%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
CISA assessment as of Feb 26, 2025
- Automatable
- no
- Technical impact
- partial
Weakness (CWE)
- CWE-502Deserialization of Untrusted Data
Affected products
Microsoft Exchange Server 2019 Cumulative Update 12
- affected: 15.02.0 up to before 15.02.1118.037
Microsoft Exchange Server 2016 Cumulative Update 23
- affected: 15.01.0 up to before 15.01.2507.032
Microsoft Exchange Server 2019 Cumulative Update 13
- affected: 15.02.0 up to before 15.02.1258.025
References
- Microsoft Exchange Server Information Disclosure Vulnerability (msrc.microsoft.com)vendor-advisory
Timeline
- ID reserved
- Record published
- Record last updated
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About CubePath
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:53 UTC. Sources and licenses