CVE-2025-11715

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "140.*", "status": "unaffected", "version": "140.4", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "144", "versionType": "rpm"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "140.*", "status": "unaffected", "version": "140.4", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "144", "versionType": "rpm"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "563626A1-A62C-4F33-A40F-31AC364254E1", "versionEndExcluding": "140.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "matchCriteriaId": "CEE2F6DA-4331-4D6D-B01B-610DFDBE1833", "versionEndExcluding": "144.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*", "matchCriteriaId": "099547E7-6CC3-428E-A9DE-1B93C01FFD1F", "versionEndExcluding": "140.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "matchCriteriaId": "8B3D3A3B-0A13-4C09-BE2C-A6E6BF290B6F", "versionEndExcluding": "144.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Memory safety bugs present in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4."}, {"lang": "es", "value": "Errores de seguridad de memoria presentes en Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 y Thunderbird 143. Algunos de estos errores mostraron evidencia de corrupci\u00f3n de memoria y presumimos que con suficiente esfuerzo algunos de estos podr\u00edan haber sido explotados para ejecutar c\u00f3digo arbitrario. Esta vulnerabilidad afecta a Firefox < 144, Firefox ESR anterior a 140.4, Thunderbird < 144 y Thunderbird anterior a 140.4."}], "id": "CVE-2025-11715", "lastModified": "2026-10-23T23:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-11715", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-10-21T03:55:16.986907Z", "version": "2.0.3"}}]}, "published": "2025-10-14T13:15:37.800", "references": [{"source": "security@mozilla.org", "tags": ["Broken Link", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1983838%2C1987624%2C1988244%2C1988912%2C1989734%2C1990085%2C1991899"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-81/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-83/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-84/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-85/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "thunderbird: firefox: Memory safety bugs fixed in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144 and Thunderbird 144", "id": "2403774", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2403774"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-119", "details": ["No description is available for this CVE."], "name": "CVE-2025-11715", "package_state": [{"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": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "rhel10/thunderbird-flatpak", "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": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 7"}, {"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": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"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"}], "public_date": "2025-10-14T12:27:36Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-11715\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-11715\nhttps://www.mozilla.org/security/advisories/mfsa2025-83/#CVE-2025-11715\nhttps://www.mozilla.org/security/advisories/mfsa2025-85/#CVE-2025-11715"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Important"}

{"analysis": {"en": {"generated_at": "2026-04-20T19:11:52.503810+00:00", "value": {"mitigation_remediation": ["Upgrade to Firefox 144 or ESR 140.4 and Thunderbird 144 or ESR 140.4 as soon as possible.", "If an immediate upgrade is impossible, disable or restrict access to untrusted content, such as disabling active content plugins, until a patch can be applied.", "Monitor for suspicious activity related to buffer overrun exploitation, such as unexpected process termination or abnormal network connections, and investigate promptly."], "summary": {"action": "Immediate patch", "impact": "Arbitrary code execution via memory corruption"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox and Thunderbird. Vulnerable releases are Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. The vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144 and Thunderbird ESR 140.4.", "description_and_impact": "Memory safety bugs were found in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. The bugs caused memory corruption and could, with sufficient effort, allow arbitrary code execution. The issue is a classic buffer overrun vulnerability (CWE-119).", "risk_and_exploitability": "The CVSS score is 8.8, indicating high severity. The EPSS score of less than 1% means that the likelihood of exploitation observed in the wild is currently very low, and the vulnerability is not listed in CISA\u2019s KEV catalog. The exploitation path would likely involve a malicious webpage or content that triggers the buffer overrun, leading to arbitrary code execution at the surface level of the browser or mail client."}}}}, "created": "2025-10-20T15:49:27.816962+00:00", "updated": "2026-04-20T19:15:15.050756+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$firefox_esr", "mozilla$PRODUCT$thunderbird"]}