msrc_cve-2025-21276
Vulnerability from csaf_microsoft
Published
2025-01-14 08:00
Modified
2025-01-14 08:00
Summary
Windows MapUrlToZone 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.
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},
{
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},
"vulnerabilities": [
{
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"cwe": {
"id": "CWE-191",
"name": "Integer Underflow (Wrap or Wraparound)"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "An attacker can send specially crafted packets which could affect availability of the service and result in Denial of Service (DoS).",
"title": "According to the CVSS metric, successful exploitation of this vulnerability has a high impact on availability (A:H). What does that mean for this vulnerability?"
},
{
"category": "faq",
"text": "While Microsoft has announced retirement of the Internet Explorer 11 application on certain platforms and the Microsoft Edge Legacy application is deprecated, the underlying MSHTML, EdgeHTML, and scripting platforms are still supported. The MSHTML platform is used by Internet Explorer mode in Microsoft Edge as well as other applications through WebBrowser control. The EdgeHTML platform is used by WebView and some UWP applications. The scripting platforms are used by MSHTML and EdgeHTML but can also be used by other legacy applications. Updates to address vulnerabilities in the MSHTML platform and scripting engine are included in the IE Cumulative Updates; EdgeHTML and Chakra changes are not applicable to those platforms.\nTo stay fully protected, we recommend that customers who install Security Only updates install the IE Cumulative updates for this vulnerability.",
"title": "The Security Updates table indicates that this vulnerability affects all supported versions of Microsoft Windows. Why are IE Cumulative updates listed for Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2?"
}
],
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"2",
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]
},
"references": [
{
"category": "self",
"summary": "CVE-2025-21276 Windows MapUrlToZone Denial of Service Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21276"
},
{
"category": "self",
"summary": "CVE-2025-21276 Windows MapUrlToZone Denial of Service Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21276.json"
}
],
"remediations": [
{
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"date": "2025-01-14T08:00:00.000Z",
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],
"url": "https://support.microsoft.com/help/5050009"
},
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],
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},
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},
{
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"date": "2025-01-14T08:00:00.000Z",
"details": "10.0.22621.4751:Security Update:https://support.microsoft.com/help/5050021",
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],
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{
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"date": "2025-01-14T08:00:00.000Z",
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{
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"details": "10.0.25398.1369:Security Update:https://support.microsoft.com/help/5049984",
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"details": "10.0.10240.20890:Security Update:https://support.microsoft.com/help/5050013",
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"url": "https://support.microsoft.com/help/5050013"
},
{
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"details": "10.0.14393.7699:Security Update:https://support.microsoft.com/help/5049993",
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],
"url": "https://support.microsoft.com/help/5049993"
},
{
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"date": "2025-01-14T08:00:00.000Z",
"details": "6.0.6003.23070:Monthly Rollup:https://support.microsoft.com/help/5050063",
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],
"url": "https://support.microsoft.com/help/5050063"
},
{
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"date": "2025-01-14T08:00:00.000Z",
"details": "1.007:IE Cumulative:https://support.microsoft.com/help/5049994",
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],
"url": "https://support.microsoft.com/help/5049994"
},
{
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"url": "https://support.microsoft.com/help/5050049"
},
{
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],
"url": "https://support.microsoft.com/help/5049994"
},
{
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"date": "2025-01-14T08:00:00.000Z",
"details": "6.2.9200.25273:Monthly Rollup:https://support.microsoft.com/help/5050004",
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],
"url": "https://support.microsoft.com/help/5050004"
},
{
"category": "vendor_fix",
"date": "2025-01-14T08:00:00.000Z",
"details": "6.3.9600.22371:Monthly Rollup:https://support.microsoft.com/help/5050048",
"product_ids": [
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],
"url": "https://support.microsoft.com/help/5050048"
},
{
"category": "vendor_fix",
"date": "2025-01-14T08:00:00.000Z",
"details": "1.002:IE Cumulative:https://support.microsoft.com/help/5049994",
"product_ids": [
"29",
"28"
],
"url": "https://support.microsoft.com/help/5049994"
}
],
"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",
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"4",
"5",
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"7",
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"9",
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]
}
],
"threats": [
{
"category": "impact",
"details": "Denial of Service"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
}
],
"title": "Windows MapUrlToZone Denial of Service Vulnerability"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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