msrc_cve-2025-59375
Vulnerability from csaf_microsoft
Published
2025-09-02 00:00
Modified
2025-09-16 01:01
Summary
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
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.
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
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"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"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2025-59375 libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-59375.json"
},
{
"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": "libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.",
"tracking": {
"current_release_date": "2025-09-16T01:01:15.000Z",
"generator": {
"date": "2025-10-20T03:48:57.155Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2025-59375",
"initial_release_date": "2025-09-02T00:00:00.000Z",
"revision_history": [
{
"date": "2025-09-16T01:01:15.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "2.0",
"product": {
"name": "CBL Mariner 2.0",
"product_id": "17086"
}
},
{
"category": "product_version",
"name": "3.0",
"product": {
"name": "Azure Linux 3.0",
"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccbl2 expat 2.6.4-2",
"product": {
"name": "\u003ccbl2 expat 2.6.4-2",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "cbl2 expat 2.6.4-2",
"product": {
"name": "cbl2 expat 2.6.4-2",
"product_id": "20543"
}
},
{
"category": "product_version_range",
"name": "\u003cazl3 expat 2.6.4-1",
"product": {
"name": "\u003cazl3 expat 2.6.4-1",
"product_id": "7"
}
},
{
"category": "product_version",
"name": "azl3 expat 2.6.4-1",
"product": {
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"product_id": "17470"
}
},
{
"category": "product_version_range",
"name": "\u003ccbl2 expat 2.6.4-1",
"product": {
"name": "\u003ccbl2 expat 2.6.4-1",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "cbl2 expat 2.6.4-1",
"product": {
"name": "cbl2 expat 2.6.4-1",
"product_id": "20210"
}
}
],
"category": "product_name",
"name": "expat"
},
{
"category": "product_name",
"name": "cbl2 cmake 3.21.4-18",
"product": {
"name": "cbl2 cmake 3.21.4-18",
"product_id": "4"
}
},
{
"category": "product_name",
"name": "azl3 cmake 3.30.3-9",
"product": {
"name": "azl3 cmake 3.30.3-9",
"product_id": "2"
}
},
{
"category": "product_name",
"name": "cbl2 python3 3.9.19-14",
"product": {
"name": "cbl2 python3 3.9.19-14",
"product_id": "6"
}
},
{
"category": "product_name",
"name": "azl3 python3 3.12.9-4",
"product": {
"name": "azl3 python3 3.12.9-4",
"product_id": "5"
}
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 expat 2.6.4-2 as a component of CBL Mariner 2.0",
"product_id": "17086-1"
},
"product_reference": "1",
"relates_to_product_reference": "17086"
},
{
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},
{
"category": "default_component_of",
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"product_id": "17084-7"
},
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},
{
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},
"product_reference": "17470",
"relates_to_product_reference": "17084"
},
{
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"name": "cbl2 cmake 3.21.4-18 as a component of CBL Mariner 2.0",
"product_id": "17086-4"
},
"product_reference": "4",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
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"product_id": "17086-3"
},
"product_reference": "3",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
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},
"product_reference": "20210",
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},
{
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"full_product_name": {
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"product_id": "17084-2"
},
"product_reference": "2",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
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},
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},
{
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"product_id": "17084-5"
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]
},
"vulnerabilities": [
{
"cve": "CVE-2025-59375",
"cwe": {
"id": "CWE-770",
"name": "Allocation of Resources Without Limits or Throttling"
},
"flags": [
{
"label": "vulnerable_code_not_in_execute_path",
"product_ids": [
"17086-4",
"17084-2",
"17086-6",
"17084-5"
]
}
],
"notes": [
{
"category": "general",
"text": "mitre",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"20543-17086",
"17470-17084",
"20210-17086"
],
"known_affected": [
"17086-1",
"17084-7",
"17086-3"
],
"known_not_affected": [
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"17084-2",
"17086-6",
"17084-5"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2025-59375 libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-59375.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2025-09-16T01:01:15.000Z",
"details": "2.6.4-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-1",
"17084-7",
"17086-3"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"remediationLevel": "TEMPORARY_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 7.2,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:T/RC:C",
"version": "3.1"
},
"products": [
"17086-1",
"17084-7",
"17086-3"
]
}
],
"title": "libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing."
}
]
}
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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