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Fencer Intel
medium 6.1

CVE-2019-19143 json

TP-LINK TL-WR849N 0.9.1 4.16 devices do not require authentication to replace the firmware via a POST request to the cgi/softup URI.

published 6y ago modified 4mo ago also EUVD-2019-8775

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.3%
EPSS 7.3% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

TP-LINK TL-WR849N 0.9.1 4.16 devices do not require authentication to replace the firmware via a POST request to the cgi/softup URI.

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Timeline

  1. Published
  2. First public exploit (EDB-48152)

Exploit prediction

7.31% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-48152 TL-WR849N 0.9.1 4.16 - Authentication Bypass (Upload Firmware) webapps, 2020-03-02
  • fireshellsecurity.team https://fireshellsecurity.team/hack-n-routers/ referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/156586/TP-Link-TL-WR849N-0.9.1-4.16-Authentication-Bypass.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 4.1 AV:A/AC:L/Au:S/C:P/I:P/A:N

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Intel 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.