msrc_cve-2025-49716
Vulnerability from csaf_microsoft
Published
2025-07-08 07:00
Modified
2025-08-18 07:00
Summary
Windows Netlogon Denial of Service Vulnerability
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.
{ "document": { "acknowledgments": [ { "names": [ "Or Yair \u003ca href=\"https://www.linkedin.com/in/or-yair\"\u003eOr Yair\u003c/a\u003e with \u003ca href=\"https://www.safebreach.com/\"\u003eSafeBreach\u003c/a\u003e" ] }, { "names": [ "Shahak Morag \u003ca href=\"https://www.linkedin.com/in/shahak-morag-6bb51b142/\"\u003eShahak Morag\u003c/a\u003e with \u003ca href=\"https://www.safebreach.com/\"\u003eSafeBreach\u003c/a\u003e" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2025-49716 Windows Netlogon Denial of Service Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49716" }, { "category": "self", "summary": "CVE-2025-49716 Windows Netlogon Denial of Service Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-49716.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "Windows Netlogon Denial of Service Vulnerability", "tracking": { "current_release_date": "2025-08-18T07:00:00.000Z", "generator": { "date": "2025-08-18T17:50:23.579Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2025-49716", "initial_release_date": "2025-07-08T07:00:00.000Z", "revision_history": [ { "date": "2025-07-08T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." }, { "date": "2025-08-18T07:00:00.000Z", "legacy_version": "1.1", "number": "2", "summary": "Updated first FAQ to state that CVE-2020-0674 has now been issued to address this vulnerability. This is an informational change only." } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "\u003c10.0.17763.7558", "product": { "name": "Windows Server 2019 \u003c10.0.17763.7558", "product_id": "5" } }, { "category": "product_version", "name": "10.0.17763.7558", "product": { "name": "Windows Server 2019 10.0.17763.7558", "product_id": "11571" } } ], "category": "product_name", "name": "Windows Server 2019" }, { "branches": [ { "category": "product_version_range", "name": "\u003c10.0.17763.7558", "product": { "name": "Windows Server 2019 (Server Core installation) \u003c10.0.17763.7558", "product_id": "4" } }, { "category": "product_version", "name": "10.0.17763.7558", "product": { "name": "Windows Server 2019 (Server Core installation) 10.0.17763.7558", "product_id": "11572" } } ], "category": "product_name", "name": "Windows Server 2019 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "\u003c10.0.20348.3932", "product": { "name": "Windows Server 2022 \u003c10.0.20348.3932", "product_id": "3" } }, { "category": "product_version", "name": "10.0.20348.3932", "product": { "name": "Windows Server 2022 10.0.20348.3932", "product_id": "11923" } } ], "category": "product_name", "name": "Windows Server 2022" }, { "branches": [ { "category": "product_version_range", "name": "\u003c10.0.20348.3932", "product": { "name": "Windows Server 2022 (Server Core installation) \u003c10.0.20348.3932", "product_id": "2" } }, { "category": "product_version", "name": "10.0.20348.3932", "product": { "name": "Windows Server 2022 (Server Core installation) 10.0.20348.3932", "product_id": "11924" } } ], "category": "product_name", "name": "Windows Server 2022 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "\u003c10.0.25398.1732", "product": { "name": "Windows Server 2022, 23H2 Edition (Server Core installation) 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(Server Core installation) \u003c6.1.7601.27820", "product_id": "14" } }, { "category": "product_version", "name": "6.1.7601.27820", "product": { "name": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.27820", "product_id": "10049" } } ], "category": "product_name", "name": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "\u003c6.2.9200.25573", "product": { "name": "Windows Server 2012 \u003c6.2.9200.25573", "product_id": "11" } }, { "category": "product_version", "name": "6.2.9200.25573", "product": { "name": "Windows Server 2012 6.2.9200.25573", "product_id": "10378" } } ], "category": "product_name", "name": "Windows Server 2012" }, { "branches": [ { "category": "product_version_range", "name": "\u003c6.2.9200.25573", "product": { "name": "Windows Server 2012 (Server Core installation) \u003c6.2.9200.25573", "product_id": "10" } }, { "category": "product_version", "name": "6.2.9200.25573", "product": { "name": "Windows Server 2012 (Server Core installation) 6.2.9200.25573", "product_id": "10379" } } ], "category": "product_name", "name": "Windows Server 2012 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "\u003c6.3.9600.22676", "product": { "name": "Windows Server 2012 R2 \u003c6.3.9600.22676", "product_id": "9" } }, { "category": "product_version", "name": "6.3.9600.22676", "product": { "name": "Windows Server 2012 R2 6.3.9600.22676", "product_id": "10483" } } ], "category": "product_name", "name": "Windows Server 2012 R2" }, { "branches": [ { "category": "product_version_range", "name": "\u003c6.3.9600.22676", "product": { "name": "Windows Server 2012 R2 (Server Core installation) \u003c6.3.9600.22676", "product_id": "8" } }, { "category": "product_version", "name": "6.3.9600.22676", "product": { "name": "Windows Server 2012 R2 (Server Core installation) 6.3.9600.22676", "product_id": "10543" } } ], "category": "product_name", "name": "Windows Server 2012 R2 (Server Core installation)" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-49716", "cwe": { "id": "CWE-400", "name": "Uncontrolled Resource Consumption" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "Successful exploitation of this vulnerability requires an attacker to invest time in repeated exploitation attempts through sending constant or intermittent data.", "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?" }, { "category": "faq", "text": "To mitigate this vulnerability, a code change was made in the July 2025 Windows Security Updates for all other Server platforms from Windows Server 2008 SP2 to Windows Server 2022, inclusive.\nAfter this change, some file and print service software can be affected, including Samba. Samba has released an update to accommodate this change. See Samba 4.22.3 - Release Notes for more information.\nTo accommodate scenarios where affected third party software cannot be updated, we released additional configuration capability in the August 2025 Windows Security Update.\nFor more information about the releases and the new modes visit: https://support.microsoft.com/en-us/topic/kb5066014-netlogon-rpc-hardening-cve-2025-49716-38a0bc06-507c-47d4-be0f-ca1acab02c68", "title": "What actions do I need to take to be protected from this vulnerability?" } ], "product_status": { "fixed": [ "9312", "9318", "9344", "10049", "10051", "10287", "10378", "10379", "10483", "10543", "10816", "10855", "11571", "11572", "11923", "11924", "12244" ], "known_affected": [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17" ] }, "references": [ { "category": "self", "summary": "CVE-2025-49716 Windows Netlogon Denial of Service Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49716" }, { "category": "self", "summary": "CVE-2025-49716 Windows Netlogon Denial of Service Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-49716.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "10.0.17763.7558:Security Update:https://support.microsoft.com/help/5062557", "product_ids": [ "5", "4" ], "url": "https://support.microsoft.com/help/5062557" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "10.0.20348.3932:Security Update:https://support.microsoft.com/help/5062572", "product_ids": [ "3", "2" ], "url": "https://support.microsoft.com/help/5062572" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "10.0.25398.1732:Security Update:https://support.microsoft.com/help/5062570", "product_ids": [ "1" ], "url": "https://support.microsoft.com/help/5062570" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "10.0.14393.8246:Security Update:https://support.microsoft.com/help/5062560", "product_ids": [ "7", "6" ], "url": "https://support.microsoft.com/help/5062560" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.0.6003.23418:Monthly Rollup:https://support.microsoft.com/help/5062624", "product_ids": [ "17", "12", "16", "15" ], "url": "https://support.microsoft.com/help/5062624" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.0.6003.23418:Security Only:https://support.microsoft.com/help/5062618", "product_ids": [ "17", "12", "16", "15" ], "url": "https://support.microsoft.com/help/5062618" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.1.7601.27820:Monthly Rollup:https://support.microsoft.com/help/5062632", "product_ids": [ "13", "14" ], "url": "https://support.microsoft.com/help/5062632" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.1.7601.27820:Security Only:https://support.microsoft.com/help/5062619", "product_ids": [ "13", "14" ], "url": "https://support.microsoft.com/help/5062619" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.2.9200.25573:Monthly Rollup:https://support.microsoft.com/help/5062592", "product_ids": [ "11", "10" ], "url": "https://support.microsoft.com/help/5062592" }, { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "6.3.9600.22676:Monthly Rollup:https://support.microsoft.com/help/5062597", "product_ids": [ "9", "8" ], "url": "https://support.microsoft.com/help/5062597" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "NONE", "privilegesRequired": "NONE", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 6.5, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17" ] } ], "threats": [ { "category": "impact", "details": "Denial of Service" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely" } ], "title": "Windows Netlogon Denial of Service Vulnerability" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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