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CVE Vulnerability Details :
CVE-2026-0834
PUBLISHED
More InfoOfficial Page
Assigner-TPLink
Assigner Org ID-f23511db-6c3e-4e32-a477-6aa17d310630
View Known Exploited Vulnerability (KEV) details
Published At-21 Jan, 2026 | 17:14
Updated At-28 Apr, 2026 | 17:46
Rejected At-
▼CVE Numbering Authority (CNA)
Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13

Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (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 C20 v5 <EU_V5_260317 or < US_V5_260419 Archer AX53 v1.0 < V1_251215 TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366

Affected Products
Vendor
TP-Link Systems Inc.
Product
Archer C20 v6.0, Archer AX53 v1.0
Modules
  • tddp
Default Status
unaffected
Versions
Affected
  • From 0 before V6_251031 (custom)
  • From 0 before V1_251215 (custom)
Vendor
TP-Link Systems Inc.
Product
Archer C20 V5
Modules
  • tddp
Default Status
unaffected
Versions
Affected
  • From 0 before US_V5_260419 (custom)
  • From 0 before EU_V5_260317 (custom)
Vendor
TP Link Systems Inc.
Product
TL-WR841N v13
Default Status
unaffected
Versions
Affected
  • From 0 before 0.9.1 Build 20231120 Rel.62366 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-290CWE-290 Authentication Bypass by Spoofing
Type: CWE
CWE ID: CWE-290
Description: CWE-290 Authentication Bypass by Spoofing
Metrics
VersionBase scoreBase severityVector
4.07.2HIGH
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-88CAPEC-88 OS Command Injection
CAPEC ID: CAPEC-88
Description: CAPEC-88 OS Command Injection
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Matt Graham (mattg.systems)
finder
Ben Grinberg, Adiel Sol, Daniel Lubel, Erez Cohen, Nir Somech, Arad Inbar, Dream Group
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware
patch
https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
patch
https://mattg.systems/posts/cve-2026-0834/
N/A
https://www.tp-link.com/us/support/faq/4905/
vendor-advisory
https://www.tp-link.com/us/support/download/archer-c20/v5/#Firmware
patch
https://www.tp-link.com/en/support/download/archer-c20/v5/#Firmware
patch
https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware
patch
Hyperlink: https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware
Resource:
patch
Hyperlink: https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
Resource:
patch
Hyperlink: https://mattg.systems/posts/cve-2026-0834/
Resource: N/A
Hyperlink: https://www.tp-link.com/us/support/faq/4905/
Resource:
vendor-advisory
Hyperlink: https://www.tp-link.com/us/support/download/archer-c20/v5/#Firmware
Resource:
patch
Hyperlink: https://www.tp-link.com/en/support/download/archer-c20/v5/#Firmware
Resource:
patch
Hyperlink: https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware
Resource:
patch
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found