CVE-2026-0892

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "*", "status": "unaffected", "version": "147", "versionType": "rpm"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "*", "status": "unaffected", "version": "147", "versionType": "rpm"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "matchCriteriaId": "E06AF540-011D-4249-9815-3A4609DD26D1", "versionEndExcluding": "147.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "matchCriteriaId": "47B67C0A-B05F-4212-9255-0446302237A5", "versionEndExcluding": "147.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Memory safety bugs present in Firefox 146 and Thunderbird 146. 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 147 and Thunderbird 147."}, {"lang": "es", "value": "Bugs de seguridad de memoria presentes en Firefox 146 y Thunderbird 146. Algunos de estos bugs 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 < 147 y Thunderbird < 147."}], "id": "CVE-2026-0892", "lastModified": "2026-06-17T10:11:34.867", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-0892", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-01-15T04:56:04.101715Z", "version": "2.0.3"}}]}, "published": "2026-01-13T14:16:39.723", "references": [{"source": "security@mozilla.org", "tags": ["Broken Link"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1986912%2C1996718%2C1999633%2C2001081%2C2004443"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-01/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-04/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "firefox: thunderbird: Memory safety bugs fixed in Firefox 147 and Thunderbird 147", "id": "2428977", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428977"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-0892", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"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": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-13T13:30:59Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-0892\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-0892\nhttps://www.mozilla.org/security/advisories/mfsa2026-01/#CVE-2026-0892"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-15T17:40:07.448181+00:00", "value": {"mitigation_remediation": ["Apply the latest Firefox release (147 or newer).", "Apply the latest Thunderbird release (147 or newer).", "Enable automatic updates to ensure the system receives future security patches promptly."], "summary": {"action": "Immediate Patch", "impact": "Memory corruption with potential arbitrary code execution"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox version 146 and Mozilla Thunderbird version 146 are affected. The bugs were fixed in Firefox 147 and Thunderbird 147, so any user running the older major releases is at risk.", "description_and_impact": "The vulnerability is a set of memory safety bugs in Firefox 146 and Thunderbird 146 that can corrupt memory. Several of these bugs were shown to corrupt memory, and the description indicates that with sufficient effort they could have allowed an attacker to run arbitrary code on the victim machine. The weakness is a classic buffer overflow (CWE-119).", "risk_and_exploitability": "The CVSS score of 9.8 reflects the severe impact of the vulnerability, with full confidentiality, integrity, and availability compromise if exploited. However, the EPSS score is below 1% and the issue is not listed in the CISA KEV catalog, indicating that exploitation is currently unlikely or not widely observed. Based on the nature of the bug, the probable attack vector involves delivering crafted content\u2014such as a malicious webpage or email\u2014that triggers the memory corruption. No specific external attack method is defined in the advisory, so the inference is that a standard content-based exploit is the likely path."}}}}, "created": "2026-01-14T11:09:01.220062+00:00", "updated": "2026-04-15T18:15:10.869305+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$thunderbird"]}