CVEs / CVE-2020-10884
CVE-2020-10884: TP-Link Archer A7 vulnerability
- high 8.8 CVSS 3.1 (NVD)
- EPSS 38.8% chance of exploitation in the next 30 days, higher than 98% of CVEs (1 Nov 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2020-10884
Description
This vulnerability allows network-adjacent attackers execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tdpServer service, which listens on UDP port 20002 by default. This issue results from the use of hard-coded encryption key. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9652.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| TP-Link Archer A7 | Firmware Ver: 190726 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-321, CWE-798 |
References
- CVE-2020-10884 on NVD
- http://packetstormsecurity.com/files/157255/TP-Link-Archer-A7-C7-Unauthenticated-LAN-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-20-336/ Third Party Advisory, VDB Entry
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.