CVE-2021-29302
Status: ModifiedHigh (8.1)—
TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Base score: 8.1
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 5.91%
- Percentile among all scored CVEs: 93
- Score date: 10/6/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-120
References
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302
- https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
- https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302
- https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip
- https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware
Raw JSON (NVD)
Show
{
"id": "CVE-2021-29302",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 9.3,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
"authentication": "NONE",
"integrityImpact": "COMPLETE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.1,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2021-04-12T19:15:14.580",
"references": [
{
"url": "https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip",
"source": "cve@mitre.org"
},
{
"url": "https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-29302",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://static.tp-link.com/beta/2021/202103/20210319/TL-WR802Nv4_US_0.9.1_3.17_up_boot%5B210317-rel64474%5D.zip",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.tp-link.com/us/support/download/tl-wr802n/#Firmware",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-120"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "TP-Link TL-WR802N(US), Archer_C50v5_US v4_200 <= 2020.06 contains a buffer overflow vulnerability in the httpd process in the body message. The attack vector is: The attacker can get shell of the router by sending a message through the network, which may lead to remote code execution."
},
{
"lang": "es",
"value": "TP-Link TL-WR802N (EE. UU.), Archer_C50v5_US v4_200 versiones 2020.06 incluyéndola, contiene una vulnerabilidad de desbordamiento de búfer en el proceso httpd en el cuerpo del mensaje. El vector de ataque es: el atacante puede obtener el shell del enrutador mediante el envío de un mensaje por medio de la red, lo que puede conllevar a una ejecución de código remota"
}
],
"lastModified": "2026-06-17T03:47:30.213",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:tp-link:tl-wr802n_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F0E493B9-213E-4D3B-B18F-B4D48296CAFF",
"versionEndIncluding": "2020.06"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:tp-link:tl-wr802n:v4:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8FA6C0FF-B3F6-41CA-A0CD-FBF40EDC413B"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}