CVE-2025-13027

// CVE-2025-13027 PoC - Conceptual memory corruption trigger // Note: This is a conceptual PoC. Actual exploitation requires specific conditions. // Memory safety bug in Firefox 144/Thunderbird 144 // Fixed in Firefox 145 and Thunderbird 145 // Example trigger mechanism (pseudo-code) function triggerMemoryCorruption() { // Allocate objects in specific memory layout let objects = []; for (let i = 0; i < 1000; i++) { objects.push(new ArrayBuffer(1024 * 1024)); } // Trigger garbage collection at specific timing // This may cause use-after-free or heap corruption objects = null; gc(); // Access freed memory // In real exploit, this would lead to arbitrary code execution return vulnerableFunction(); } // Attack vector: Network-based, no authentication required // Target: Firefox 144 and Thunderbird 144 // Mitigation: Upgrade to Firefox 145 and Thunderbird 145

{"cve": {"id": "CVE-2025-13027", "sourceIdentifier": "[email protected]", "published": "2025-11-11T16:15:39.820", "lastModified": "2026-04-13T15:16:44.647", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Memory safety bugs present in Firefox 144 and Thunderbird 144. 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 145 and Thunderbird 145."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "versionEndExcluding": "145.0", "matchCriteriaId": "445D5AED-0882-46FE-A5F1-B7148B923221"}]}]}], "references": [{"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1987237%2C1990079%2C1991715%2C1994994", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-87/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-90/", "source": "[email protected]"}]}}