{"id":"CVE-2025-8302","state":"PUBLISHED","title":"Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability","description":"Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26553.","publishedAt":"2025-09-02T20:02:20.806Z","updatedAt":"2025-09-03T15:29:59.332Z","severity":{"score":8.8,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"zdi"},"assigner":"zdi","products":["Realtek rtl81xx SDK"],"affected":[{"vendor":"Realtek","product":"rtl81xx SDK","defaultStatus":"unknown","versions":[{"version":"1030.38.712.2019","status":"affected"}]}],"references":["https://www.zerodayinitiative.com/advisories/ZDI-25-879/"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8302.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-8302","state":"PUBLISHED","datePublished":"2025-09-02T20:02:20.806Z","dateUpdated":"2025-09-03T15:29:59.332Z","assignerShortName":"zdi","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateReserved":"2025-07-28T23:20:00.535Z"},"containers":{"cna":{"title":"Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability","descriptions":[{"lang":"en","value":"Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26553."}],"affected":[{"vendor":"Realtek","product":"rtl81xx SDK","defaultStatus":"unknown","versions":[{"version":"1030.38.712.2019","status":"affected"}]}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-25-879/","name":"ZDI-25-879","tags":["x_research-advisory"]}],"metrics":[{"format":"CVSS","cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"zdi","orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateUpdated":"2025-09-02T20:02:20.806Z"},"dateAssigned":"2025-07-28T23:20:00.566Z","datePublic":"2025-09-02T19:58:24.846Z","source":{"lang":"en","value":"dungnm from vcslab of Viettel Cyber Security"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-03T15:29:53.014337Z","id":"CVE-2025-8302","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-03T15:29:59.332Z"}}]}}}