CVE-2025-59375

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"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*", "matchCriteriaId": "2562E072-C9E9-432C-9545-404F89D73E00", "versionEndExcluding": "2.7.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing."}, {"lang": "es", "value": "libexpat en Expat anterior a 2.7.2 permite a los atacantes desencadenar grandes asignaciones de memoria din\u00e1mica a trav\u00e9s de un documento peque\u00f1o que se env\u00eda para su an\u00e1lisis."}], "id": "CVE-2025-59375", "lastModified": "2026-11-10T13:17:56.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "cve@mitre.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-59375", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-09-15T20:22:58.509715Z", "version": "2.0.3"}}]}, "published": "2025-09-15T03:15:40.920", "references": [{"source": "cve@mitre.org", "tags": ["Product"], "url": "https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/libexpat/libexpat/issues/1018"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking"], "url": "https://github.com/libexpat/libexpat/pull/1034"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://issues.oss-fuzz.com/issues/439133977"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2025/09/16/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/05/01/5"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-089022.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "cve@mitre.org", "type": "Secondary"}]}

{"bugzilla": {"description": "expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing", "id": "2395108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395108"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input (~250 KiB) can cause the parser to allocate hundreds of megabytes, leading to denial-of-service (DoS) through memory exhaustion."], "mitigation": {"lang": "en:us", "value": "To mitigate the issue, limit XML input size and complexity before parsing, and avoid accepting compressed or deeply nested XML. Use OS-level resource controls (like ulimit or setrlimit()) to cap memory usage, or run the parser in a sandboxed or isolated process with strict memory and CPU limits. This helps prevent denial-of-service by containing excessive resource consumption."}, "name": "CVE-2025-59375", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "expat", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "compat-expat1", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "expat", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "expat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "expat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mingw-expat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "xmlrpc-c", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "expat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "expat", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-59375\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-59375\nhttps://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74\nhttps://github.com/libexpat/libexpat/issues/1018\nhttps://github.com/libexpat/libexpat/pull/1034\nhttps://issues.oss-fuzz.com/issues/439133977"], "statement": "This issue is Important rather than Critical because, while it allows for significant resource exhaustion leading to denial-of-service (DoS), it does not enable arbitrary code execution, data leakage, or privilege escalation. The vulnerability stems from an uncontrolled memory amplification behavior in libexpat\u2019s parser, where a relatively small XML payload can cause disproportionately large heap allocations. However, the flaw is limited in scope to service disruption and requires the attacker to submit a crafted XML document\u2014something that can be mitigated with proper input validation and memory usage limits. Therefore, while the exploitability is high, the impact is confined to availability, not confidentiality or integrity, making it a high-severity but not critical flaw.", "threat_severity": "Important"}

{"created": "2025-09-15T10:43:20.998197+00:00", "updated": "2025-09-15T10:43:20.998251+00:00", "vendors": ["libexpat_project", "libexpat_project$PRODUCT$libexpat"]}