CVE-2026-0834Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13
- 7.2HighCVSS base score
- 0.43%Exploitation in 30 daysEPSS · top 62% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
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
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By TPLink
- 12 days later
· 12 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| TPLinkCNA (assigner) | 4.0 | High7.2 | 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 |
| NVDNVD · Modified | 4.0 | High7.2 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.43% · top 62% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
TP-Link Systems Inc. · Archer C20 v6.0, Archer AX53 v1.0
- affected < V6_251031
- affected < V1_251215
TP-Link Systems Inc. · Archer C20 V5
- affected < US_V5_260419
- affected < EU_V5_260317
TP Link Systems Inc. · TL-WR841N v13
- affected < 0.9.1 Build 20231120 Rel.62366
References
References7
- https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware (opens in a new tab)patch
- https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware (opens in a new tab)patch
- https://mattg.systems/posts/cve-2026-0834/ (opens in a new tab)
- https://www.tp-link.com/us/support/faq/4905/ (opens in a new tab)vendor-advisory
- https://www.tp-link.com/us/support/download/archer-c20/v5/#Firmware (opens in a new tab)patch
- https://www.tp-link.com/en/support/download/archer-c20/v5/#Firmware (opens in a new tab)patch
- https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware (opens in a new tab)patch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-3601 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-0834)Record last updated .