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{"id": "CVE-2021-33274", "vendorId": null, "type": "cve", "bulletinFamily": "NVD", "title": "CVE-2021-33274", "description": "D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_80040af8 in /formWlanSetup. This vulnerability is triggered via a crafted POST request.", "published": "2021-12-01T22:15:00", "modified": "2021-12-03T13:43:00", "epss": [{"cve": "CVE-2021-33274", "epss": 0.00179, "percentile": 0.53679, "modified": "2023-05-23"}], "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 10.0}, "severity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "exploitabilityScore": 3.9, "impactScore": 5.9}, "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-33274", "reporter": "cve@mitre.org", "references": ["https://www.dlink.com/en/security-bulletin/", "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln07"], "cvelist": ["CVE-2021-33274"], "immutableFields": [], "lastseen": "2023-05-23T15:28:21", "viewCount": 11, "enchantments": {"dependencies": {"references": [{"type": "checkpoint_advisories", "idList": ["CPAI-2021-1070"]}, {"type": "cnvd", "idList": ["CNVD-2021-94723"]}]}, "score": {"value": 4.5, "vector": "NONE"}, "twitter": {"counter": 6, "modified": "2021-12-02T08:35:58", "tweets": [{"link": "https://twitter.com/www_sesin_at/status/1466793175373303813", "text": "New post from https://t.co/9KYxtdZjkl (CVE-2021-33274 (dir-809_firmware)) has been published on https://t.co/jveClvF7bZ"}, {"link": "https://twitter.com/www_sesin_at/status/1466793175373303813", "text": "New post from https://t.co/9KYxtdZjkl (CVE-2021-33274 (dir-809_firmware)) has been published on https://t.co/jveClvF7bZ"}, {"link": "https://twitter.com/WolfgangSesin/status/1466793166124769292", "text": "New post from https://t.co/uXvPWJy6tj (CVE-2021-33274 (dir-809_firmware)) has been published on https://t.co/NaeEC4nS3h"}, {"link": "https://twitter.com/WolfgangSesin/status/1466793166124769292", "text": "New post from https://t.co/uXvPWJy6tj (CVE-2021-33274 (dir-809_firmware)) has been published on https://t.co/NaeEC4nS3h"}, {"link": "https://twitter.com/RemotelyAlerts/status/1466785398223294467", "text": "Severity: | D-Link DIR-809 devices with firmware thr... | CVE-2021-33274 | Link for more: https://t.co/kYp9SRF09k"}, {"link": "https://twitter.com/RemotelyAlerts/status/1466785398223294467", "text": "Severity: | D-Link DIR-809 devices with firmware thr... | CVE-2021-33274 | Link for more: https://t.co/kYp9SRF09k"}]}, "backreferences": {"references": [{"type": "checkpoint_advisories", "idList": ["CPAI-2021-1070"]}]}, "exploitation": null, "epss": [{"cve": "CVE-2021-33274", "epss": 0.00163, "percentile": 0.51508, "modified": "2023-05-02"}], "vulnersScore": 4.5}, "_state": {"dependencies": 1685069469, "score": 1684856002, "affected_software_major_version": 0, "epss": 0}, "_internal": {"score_hash": "6681787d5362ecd4b35e616db9a90140"}, "cna_cvss": {"cna": null, "cvss": {}}, "cpe": ["cpe:/o:dlink:dir-809_firmware:1.12wwb03"], "cpe23": ["cpe:2.3:o:dlink:dir-809_firmware:1.12wwb03:*:*:*:*:*:*:*"], "cwe": ["CWE-787"], "affectedSoftware": [{"cpeName": "dlink:dir-809_firmware", "version": "1.12wwb03", "operator": "le", "name": "dlink dir-809 firmware"}], "affectedConfiguration": [{"name": "dlink dir-809", "cpeName": "dlink:dir-809", "version": "-", "operator": "eq"}], "cpeConfiguration": {"CVE_data_version": "4.0", "nodes": [{"operator": "AND", "children": [{"operator": "OR", "children": [], "cpe_match": [{"vulnerable": true, "cpe23Uri": "cpe:2.3:o:dlink:dir-809_firmware:1.12wwb03:*:*:*:*:*:*:*", "versionEndIncluding": "1.12wwb03", "cpe_name": []}]}, {"operator": "OR", "children": [], "cpe_match": [{"vulnerable": false, "cpe23Uri": "cpe:2.3:h:dlink:dir-809:-:*:*:*:*:*:*:*", "cpe_name": []}]}], "cpe_match": []}]}, "extraReferences": [{"url": "https://www.dlink.com/en/security-bulletin/", "name": "https://www.dlink.com/en/security-bulletin/", "refsource": "MISC", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln07", "name": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln07", "refsource": "MISC", "tags": ["Exploit", "Third Party Advisory"]}], "product_info": [{"vendor": "Dlink", "product": "Dir-809_firmware"}], "solutions": [], "workarounds": [], "impacts": [], "exploits": [], "problemTypes": []}

{"cnvd": [{"lastseen": "2022-11-05T08:10:31", "description": "A buffer overflow vulnerability exists in the D-Link DIR-809, a dual-band router from D-Link (China), which stems from the failure of the FUN_80040af8 function in the product/formWlanSetup link to effectively determine data boundaries. An attacker could cause a buffer overflow resulting in a denial of service or code execution via a POST request.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-12-04T00:00:00", "type": "cnvd", "title": "D-Link DIR-809 formWlanSetup buffer overflow vulnerability", "bulletinFamily": "cnvd", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 10.0, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-33274"], "modified": "2021-12-06T00:00:00", "id": "CNVD-2021-94723", "href": "https://www.cnvd.org.cn/flaw/show/CNVD-2021-94723", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}], "checkpoint_advisories": [{"lastseen": "2022-03-13T15:28:59", "description": "A buffer overflow vulnerability exists in D-Link DIR809. Successful exploitation of this vulnerability could result in a denial of service or execution of arbitrary code into the affected system.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2022-03-10T00:00:00", "type": "checkpoint_advisories", "title": "D-Link DIR809 Buffer Overflow (CVE-2021-33266; CVE-2021-33267; CVE-2021-33268; CVE-2021-33269; CVE-2021-33270; CVE-2021-33271; CVE-2021-33274)", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 10.0, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-33266", "CVE-2021-33267", "CVE-2021-33268", "CVE-2021-33269", "CVE-2021-33270", "CVE-2021-33271", "CVE-2021-33274"], "modified": "2022-03-10T00:00:00", "id": "CPAI-2021-1070", "href": "", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}]}