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Fencer Vulns
critical 9.8

CVE-2020-9374 in the critical feed json

On TP-Link TL-WR849N 0.9.1 4.16 devices, a remote command execution vulnerability in the diagnostics area can be exploited when an attacker…

published 2020-02-24 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30195

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
42.7%
EPSS 42.7% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

On TP-Link TL-WR849N 0.9.1 4.16 devices, a remote command execution vulnerability in the diagnostics area can be exploited when an attacker sends specific shell metacharacters to the panel's traceroute feature.

Timeline

  1. Published
  2. First public exploit (EDB-48155)

Exploit prediction

42.67% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-48155 TP LINK TL-WR849N - Remote Code Execution webapps, 2020-03-02
  • fireshellsecurity.team https://fireshellsecurity.team/hack-n-routers/ referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/ElberTavares/routers-exploit/tree/master/tp-link referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/156584/TP-Link-TL-WR849N-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

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.