CVE-2025-53778
published 2025-08-12CVE-2025-53778: Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
PriorityP274high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
38.18%
98.4th percentile
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
Affected
47 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21100 | 10.0.10240.21100 |
| microsoft | windows_10_1607 | < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_10_1809 | < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_10_21h2 | < 10.0.19044.6216 | 10.0.19044.6216 |
| microsoft | windows_10_22h2 | < 10.0.19045.6216 | 10.0.19045.6216 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21100 | 10.0.10240.21100 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6216 | 10.0.19044.6216 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6216 | 10.0.19045.6216 |
| microsoft | windows_11_22h2 | < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_23h2 | < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_24h2 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27872 | 6.1.7601.27872 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23471 | 6.0.6003.23471 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25622 | 6.2.9200.25622 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22725 | 6.3.9600.22725 |
| microsoft | windows_server_2016 | < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8330 | 10.0.14393.8330 |
Detection & IOCsextracted from sources · hover to see the quote
- →CVE-2025-53778 is an NTLM Elevation of Privilege vulnerability exploitable over the network; monitor for anomalous NTLM authentication attempts (e.g., unexpected NTLM negotiate/challenge/authenticate sequences from non-standard hosts or to sensitive servers) that could indicate privilege escalation to SYSTEM. ↗
- →Successful exploitation grants SYSTEM privileges; alert on processes or sessions unexpectedly running as SYSTEM following an NTLM authentication event, particularly over the network. ↗
- →Microsoft rates this as 'Exploitation More Likely'; prioritize detection and patching on exposed Windows systems, especially those accepting inbound NTLM authentication over the network. ↗
- →Zscaler recommends Advanced Cloud Firewall and Advanced Threat Protection subscriptions for network-level detection of exploitation attempts against CVE-2025-53778. ↗
- ·Customer action is required; unpatched systems remain vulnerable to network-based NTLM privilege escalation to SYSTEM. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc8.8HIGH
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GHSA
GHSA-6vxh-fg42-74vm: Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network
ghsa_unreviewed·2025-08-12
CVE-2025-53778 [HIGH] CWE-287 GHSA-6vxh-fg42-74vm: Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
Microsoft
Windows NTLM Elevation of Privilege Vulnerability
vendor_msrc·2025-08-12·CVSS 8.8
CVE-2025-53778 [HIGH] CWE-287 Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
Description: Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Windows NTLM: Windows NTLM
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5063877
Reference: https://support.microsoft.com/help/5063877
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5063880
Referenc
No detection rules found.
No public exploits indexed.
Tenable
September 2025 Microsoft Patch Tuesday | Tenable®
blogs_tenable·2025-09-09
September 2025 Microsoft Patch Tuesday | Tenable®
## Cloud Exposure
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## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
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Tenable Patch Management Request a demo
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## AI Exposure
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## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
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Cloud Security Posture Man
Tenable
Microsoft’s August 2025 Patch Tuesday Addresses 107 CVEs (CVE-2025-53779)
blogs_tenable·2025-08-12·CVSS 7.2
[HIGH] Microsoft’s August 2025 Patch Tuesday Addresses 107 CVEs (CVE-2025-53779)
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Krebs
Microsoft Patch Tuesday, August 2025 Edition
blogs_krebs·2025-08-12·CVSS 7.2
CVE-2025-53786 [HIGH] Microsoft Patch Tuesday, August 2025 Edition
Microsoft today released updates to fix more than 100 security flaws in its Windows operating systems and other software. At least 13 of the bugs received Microsoft’s most-dire “critical” rating, meaning they could be abused by malware or malcontents to gain remote access to a Windows system with little or no help from users.
August’s patch batch from Redmond includes an update for CVE-2025-53786 , a vulnerability that allows an attacker to pivot from a compromised Microsoft Exchange Server directly into an organization’s cloud environment, potentially gaining control over Exchange Online and other connected Microsoft Office 365 services. Microsoft first warned about this bug on Aug. 6, saying it affects Exchange Server 2016 and Exchange Server 2019 , as well as its flagship Exchange Serv
Bleepingcomputer
Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
blogs_bleepingcomputer·2025-08-12·CVSS 7.2
[HIGH] Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
## Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
## Lawrence Abrams
44 Elevation of Privilege Vulnerabilities
35 Remote Code Execution Vulnerabilities
18 Information Disclosure Vulnerabilities
4 Denial of Service Vulnerabilities
9 Spoofing Vulnerabilities
When BleepingComputer reports on the Patch Tuesday security updates, we only count those released on Patch Tuesday. Therefore, the number of flaws does not include Mariner, Azure, and Microsoft Edge bugs fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5063878 & KB5063875 cumulative updates and the Windows 10 KB5063709 cumulative update .
## One publicly disclosed zero-day fixed
This month's Patch Tuesday fixes one
Qualys
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review | Qualys
blogs_qualys·2025-08-12
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for August 2025
- Adobe Patches for August 2025
- Zero-day Vulnerability Patched in August Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- Microsoft July 2025 Patch Tuesday Mitigations
- Qualys Monthly Webinar Series
It’s the second Tuesday of August, and Microsoft has rolled out its latest security updates. Microsoft’s August 2025 Patch Tuesday has arrived, bringing a fresh wave of security fixes to help organizations stay ahead of evolving threats. Here’s a quick breakdown of wh
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Microsoft Patch Tuesday for August 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-08-12·CVSS 7.8
[HIGH] Microsoft Patch Tuesday for August 2025 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for August 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for August 2025, which includes 111 vulnerabilities affecting a range of products, including 13 that Microsoft marked as “critical”.
In this month's release, Microsoft observed none of the included vulnerabilities being actively exploited in the wild. Out of 13 "critical" entries, 9 are remote code execution (RCE) vulnerabilities in Microsoft Windows services and applications including the Windows kernel, Microsoft Message Queuing (MSMQ), Windows Hyper-V, Microsoft Office and GDI+.
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Talos
Microsoft Patch Tuesday for August 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-08-12·CVSS 7.8
[HIGH] Microsoft Patch Tuesday for August 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for August 2025, which includes 111 vulnerabilities affecting a range of products, including 13 that Microsoft marked as “critical”.
In this month's release, Microsoft observed none of the included vulnerabilities being actively exploited in the wild. Out of 13 "critical" entries, 9 are remote code execution (RCE) vulnerabilities in Microsoft Windows services and applications including the Windows kernel, Microsoft Message Queuing (MSMQ), Windows Hyper-V, Microsoft Office and GDI+.
CVE-2025-50176 is an RCE vulnerability in DirectX Graphics Kernel given a CVSS 3.1 score of 7.8, where access of resource using incompatible type ('type confusion') in Graphics Kernel allows an authorized attacker to execute code locally. Microsoft has noted t
Krebs
Microsoft Patch Tuesday, August 2025 Edition
blogs_krebs·2025-08-12·CVSS 7.2
CVE-2025-53786 [HIGH] Microsoft Patch Tuesday, August 2025 Edition
Microsoft today released updates to fix more than 100 security flaws in its Windows operating systems and other software. At least 13 of the bugs received Microsoft’s most-dire “critical” rating, meaning they could be abused by malware or malcontents to gain remote access to a Windows system with little or no help from users.
August’s patch batch from Redmond includes an update for CVE-2025-53786, a vulnerability that allows an attacker to pivot from a compromised Microsoft Exchange Server directly into an organization’s cloud environment, potentially gaining control over Exchange Online and other connected Microsoft Office 365 services. Microsoft first warned about this bug on Aug. 6, saying it affects Exchange Server 2016 and Exchange Server 2019, as well as its flagship Exchange Server
Qualys
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review
blogs_qualys·2025-08-12
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for August 2025
Adobe Patches for August 2025
Zero-day Vulnerability Patched in August Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response withPatch Management (PM)
Microsoft July 2025 Patch Tuesday Mitigations
Qualys Monthly Webinar Series
It’s the second Tuesday of August, and Microsoft has rolled out its latest security updates. Microsoft’s August 2025 Patch Tuesday has arrived, bringing a fresh wave of security fixes to help organizations stay ahead of evolving threats. Here’s a quick breakdown of what you need t
Crowdstrike
August 2025 Patch Tuesday: Updates and Analysis
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How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
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Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
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https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53778https://www.vicarius.io/vsociety/posts/cve-2025-53778-detection-script-improper-authentication-vulnerability-affecting-windows-ntlmhttps://www.vicarius.io/vsociety/posts/cve-2025-53778-mitigation-script-improper-authentication-vulnerability-affecting-windows-ntlm
2025-08-12
Published