CVE-2026-45504
Microsoft Exchange Server Elevation of Privilege Vulnerability
Description
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
INFO
Published Date :
June 9, 2026, 5:17 p.m.
Last Modified :
July 23, 2026, 8:10 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-45504
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | f38d906d-7342-40ea-92c1-6c4a2c6478c8 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Public PoC/Exploit Available at Github
CVE-2026-45504 has a 7 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45504.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45504 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45504 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45504
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Live CVE PoC (Proof-of-Concepts) Aggregator with Smart Search & Threat Intelligence
Python HTML
CVE-2026-45504 Microsoft Exchange File Read
Python
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JavaScript PowerShell
Latest CVEs with their Proof of Concept exploits.
Python HTML
一个 CVE 漏洞预警知识库，无 exp/poc，部分包含修复方案。A knowledge base of CVE security vulnerability, no PoCs/exploits.
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45504 vulnerability anywhere in the article.
-
Zero Day Initiative
The June 2026 Security Update Review
CVE Title Severity CVSS Public Exploited XI Type CVE-2026-41091 Microsoft Defender Elevation of Privilege Vulnerability Important 7.8 Yes Yes 0 EoP CVE-2026-49160 HTTP.sys Denial of Service Vulnerabil ... Read more
The following table lists the changes that have been made to the
CVE-2026-45504 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: varias versiones de Microsoft Exchange Server, Description: Falsificación de petición del lado del servidor (SSRF) en Microsoft Exchange Server permite a un atacante autorizado elevar privilegios a través de una red. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Microsoft', 'product': 'Microsoft Exchange Server 2016 Cumulative Update 23', 'versions': [{'status': 'affected', 'version': '15.01.0.0', 'lessThan': '15.01.2507.069', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Exchange Server 2019 Cumulative Update 14', 'versions': [{'status': 'affected', 'version': '15.02.0.0', 'lessThan': '15.02.1544.041', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Exchange Server 2019 Cumulative Update 15', 'versions': [{'status': 'affected', 'version': '15.02.0.0', 'lessThan': '15.02.1748.046', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Microsoft Exchange Server Subscription Edition RTM', 'versions': [{'status': 'affected', 'version': '15.02.0.0', 'lessThan': '15.02.2562.043', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-45504', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-10T03:56:08.420862Z'} -
Reanalysis by [email protected]
Jun. 15, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:*:*:*:*:subscription:*:*:* versions up to (excluding) 15.02.2562.043 OR *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:* versions up to (excluding) 15.02.2562.043 -
Initial Analysis by [email protected]
Jun. 12, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:*:*:*:*:subscription:*:*:* versions up to (excluding) 15.02.2562.043 Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45504 Types: Vendor Advisory -
New CVE Received by [email protected]
Jun. 09, 2026
Action Type Old Value New Value Added Description Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-918 Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45504