TP-Link Archer C20/Archer AX53 TDDP authentication spoofing

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in TP-Link Archer C20 and Archer AX53. This vulnerability affects unknown code of the component TDDP Module. This manipulation causes authentication spoofing. The identification of this vulnerability is CVE-2026-0834. The attack needs to be done within the local network. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in TP-Link Archer C20 and Archer AX53 (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component TDDP Module. The manipulation with an unknown input leads to a authentication spoofing vulnerability. The CWE definition for the vulnerability is CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Logic vulnerability in TP-Link Archer C20 v6.0 and Archer AX53 v1.0 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability.This issue affects Archer C20 v6.0 < V6_251031. Archer AX53 v1.0 < V1_251215

The weakness was shared by Matt Graham. The advisory is shared at tp-link.com. This vulnerability is known as CVE-2026-0834 since 01/09/2026. The exploitation appears to be easy. The attack can only be initiated within the local network. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-3601). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/09/2026 CVE reserved
01/21/2026 +12 days Advisory disclosed
01/21/2026 +0 days VulDB entry created
02/11/2026 +21 days VulDB entry last update

Sourcesinfo

Vendor: tp-link.com

Advisory: tp-link.com
Researcher: Matt Graham
Status: Confirmed

CVE: CVE-2026-0834 (🔒)
GCVE (CVE): GCVE-0-2026-0834
GCVE (VulDB): GCVE-100-342169
EUVD: 🔒

Entryinfo

Created: 01/21/2026 18:40
Updated: 02/11/2026 02:24
Changes: 01/21/2026 18:40 (66), 01/22/2026 11:14 (1), 01/27/2026 09:57 (3), 02/11/2026 02:24 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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