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Vulnerability record · CVE-2020-10885 · published 25 March 2020

CVE-2020-10885: Tp-link ac1750 firmware improper input validation vulnerability

Tp Link · Ac1750 Firmware

This vulnerability allows remote attackers to 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 handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user. Was ZDI-CAN-9661.

9.8 CVSS 3.1 Critical EPSS 6.5% · top 6.4% CWE-20 · Improper input validation
9.8CVSS 3.1 base score, v2 7.5
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

This vulnerability allows remote attackers to 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 handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user. Was ZDI-CAN-9661.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zerodayinitiative.com/advisories/ZDI-20-337/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-337/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-28347TP-Link Archer A7 tdpServer OS command injection via slave_mactdpServer on TP-Link Archer A7 AC1750 devices before firmware 201029 mishandles shell quotes in the slave_mac parameter, allowing OS command injectio…EPSS 75%analysed9.8CVE-2020-10886Tp-link ac1750 firmware os command injection vulnerabilityThis vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 route…EPSS 5.0%9.8CVE-2020-10887Tp-link ac1750 firmware vulnerabilityThis vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not…EPSS 3.7%9.8CVE-2020-10888Tp-link ac1750 firmware improper authentication vulnerabilityThis vulnerability allows remote attackers to bypass authentication on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 router…EPSS 2.2%9.8CVE-2020-10881Tp-link ac1750 firmware stack-based buffer overflow vulnerabilityThis vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 route…EPSS 9.3%8.8CVE-2022-24352Tp-link ac1750 firmware out-of-bounds read vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC1750 prior to 211210 routers. A…EPSS 0.74%8.8CVE-2022-24353Tp-link ac1750 firmware out-of-bounds read vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC1750 1.1.4 Build 20211022 rel.5…EPSS 0.74%8.8CVE-2022-24354Tp-link ac1750 firmware integer overflow vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC1750 prior to 1.1.4 Build 20211…EPSS 1.8%

Source: NIST National Vulnerability Database (record CVE-2020-10885), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.