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Fencer Vulns
medium 5.6

CVE-2025-15551 json

LAN Code Execution on TP-Link Archer MR200, Archer C20, TL-WR850N and TL-WR845N

published 2026-02-05 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-206826

cvss
5.6
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

The response coming from TP-Link Archer MR200 v5.2, C20 v5 and v6, TL-WR850N v3, and TL-WR845N v4 for any request is getting executed by the JavaScript function like eval directly without any check. Attackers can exploit this vulnerability via a Man-in-the-Middle (MitM) attack to execute JavaScript code on the router's admin web portal without the user's permission or knowledge.

Patch / fix

  • TP-Link Systems Inc. Archer MR200 v5.2 1.2.0 Build 250917 Rel.51746
  • TP-Link Systems Inc. Archer C20 v6 0.9.1 4.19 v0001.0 Build 250630 Rel.56583n
  • TP Link Systems Inc. TL-WR850N v3 3.16.0 0.9.1 v6031.0 Build 251205 Rel.22089n
  • TP Link Systems Inc. TL-WR845N v4 0.9.1 3.19 Build 251031 rel33710
  • TP-Link Systems Inc. Archer C20 v5 EU_V5_260317, US_V5_260419

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 5.9 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
CNA 4.0 5.9 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:L/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
NVD 3.1 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

  • TP-Link Systems Inc. Archer MR200 v5.2
  • TP-Link Systems Inc. Archer C20 v6
  • TP Link Systems Inc. TL-WR850N v3
  • TP Link Systems Inc. TL-WR845N v4
  • TP-Link Systems Inc. Archer C20 v5

Classification

Weakness
  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.