CVE-2025-8034

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "115.*", "status": "unaffected", "version": "115.26", "versionType": "rpm"}, {"lessThanOrEqual": "128.*", "status": "unaffected", "version": "128.13", "versionType": "rpm"}, {"lessThanOrEqual": "140.*", "status": "unaffected", "version": "140.1", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "141", "versionType": "rpm"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "128.*", "status": "unaffected", "version": "128.13", "versionType": "rpm"}, {"lessThanOrEqual": "140.*", "status": "unaffected", "version": "140.1", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "141", "versionType": "rpm"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "D697EDEE-5DF4-4FC2-8128-BC9DC23EFFF3", "versionEndExcluding": "115.26.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "A621920F-5B71-403D-B8F9-EC22F249CD4C", "versionEndExcluding": "128.13.0", "versionStartIncluding": "128.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "matchCriteriaId": "BB48C2EF-A6AC-4445-9417-1B65D5BC509B", "versionEndExcluding": "140.1.0", "versionStartIncluding": "140.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*", "matchCriteriaId": "B9BB9B0C-2B49-44EA-9BED-241A8CE8794E", "versionEndExcluding": "128.13.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*", "matchCriteriaId": "8CE266C2-5AF1-4C57-9B7C-47039FF06384", "versionEndExcluding": "140.1.0", "versionStartIncluding": "140.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1."}, {"lang": "es", "value": "Errores de seguridad de memoria presentes en Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 y Thunderbird 140. Algunos de estos errores mostraron evidencia de corrupci\u00f3n de memoria y presumimos que, con suficiente esfuerzo, algunos de ellos podr\u00edan haberse explotado para ejecutar c\u00f3digo arbitrario. Esta vulnerabilidad afecta a Firefox menor que 141, Firefox ESR menor que 115.26, Firefox ESR menor que 128.13, Firefox ESR menor que 140.1, Thunderbird menor que 141, Thunderbird menor que 128.13 y Thunderbird menor que 140.1."}], "id": "CVE-2025-8034", "lastModified": "2026-10-05T15:10:00.590", "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-2025-8034", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-07-24T03:55:30.954852Z", "version": "2.0.3"}}]}, "published": "2025-07-22T21:15:50.560", "references": [{"source": "security@mozilla.org", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1970422"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-56/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-57/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-58/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-59/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-62/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2025-63/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:11797", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "firefox-0:128.13.0-1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-07-28T00:00:00Z"}, {"advisory": "RHSA-2025:11747", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:128.13.0-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-24T00:00:00Z"}, {"advisory": "RHSA-2025:11748", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "firefox-0:128.13.0-1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-24T00:00:00Z"}], "bugzilla": {"description": "firefox: thunderbird: Memory safety bugs", "id": "2382711", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2382711"}, "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": "verified"}, "cwe": "CWE-119", "details": ["Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.", "A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:\nMemory safety bugs are present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140, and Thunderbird 140. Some of these bugs show evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code."], "name": "CVE-2025-8034", "package_state": [{"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": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-22T20:49:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-8034\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-8034\nhttps://www.mozilla.org/security/advisories/mfsa2025-58/#CVE-2025-8034\nhttps://www.mozilla.org/security/advisories/mfsa2025-62/#CVE-2025-8034"], "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": "2026-04-20T22:10:13.959039+00:00", "value": {"mitigation_remediation": ["Update Firefox and Thunderbird to the latest patched releases (e.g., Firefox\u00a0141, ESR\u00a0140.1 and Thunderbird\u00a0141, ESR\u00a0140.1).", "Ensure that any Red\u00a0Hat Enterprise Linux 8/9/10 installations receive the updated Firefox and Thunderbird packages from the official repositories.", "As an additional precaution, configure browsers to restrict script execution on unknown sites and disable add\u2011ons until they have been verified as safe."], "summary": {"action": "Patch Immediately", "impact": "Potential Arbitrary Code Execution"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox versions 115.26, 128.13, 140.1, 141 and earlier releases 115.25, 128.12, 140.0, 140 are affected. Mozilla Thunderbird versions 128.13, 140.1, 141 and earlier releases 128.12, 140.0, 140 are affected. Packages distributed for Red\u00a0Hat Enterprise\u00a0Linux 8, 9 and 10 also contain the vulnerable binaries, so systems running these distributions are at risk until updated.", "description_and_impact": "Memory corruption bugs were identified in several builds of Mozilla Firefox and Thunderbird, including both regular and extended support editions. The faults allow an attacker to corrupt memory while the applications process data, and with sufficient effort could lead to arbitrary code execution. This would grant an attacker full control of the affected system, compromising confidentiality, integrity, and availability.", "risk_and_exploitability": "The CVSS score of 8.8 classifies the flaw as high severity, indicating that exploitation can provide substantial damage. The EPSS score of less than 1% indicates a very low current exploitation probability, and the vulnerability is not listed in CISA\u2019s KEV catalog. The weakness (CWE\u2011119) is a classic buffer overflow scenario that could be triggered by memory corruption. The likely attack vector is the presentation of malicious content to the browser or mail client, such as a compromised web page, email attachment, or add\u2011on. Based on the description, it is inferred that such remote or local content could be used to activate the memory corruption, but no publicly disclosed exploit is available at this time."}}}}, "created": "2025-07-23T17:35:59.909380+00:00", "updated": "2026-04-20T22:15:06.195804+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$firefox_esr", "mozilla$PRODUCT$thunderbird"]}