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Fencer Intel
critical 9.8

CVE-2015-9551 json

An issue was discovered on TOTOLINK A850R-V1 through 1.0.1-B20150707.1612 and F1-V2 through 1.1-B20150708.1646 devices.

published 5y ago modified 4mo ago also EUVD-2015-9388

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.4%
EPSS 4.4% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

An issue was discovered on TOTOLINK A850R-V1 through 1.0.1-B20150707.1612 and F1-V2 through 1.1-B20150708.1646 devices. There is Remote Code Execution in the management interface via the formSysCmd sysCmd parameter.

Patch / fix

  • totolink a850r-v1_firmware 1.0.1-b20150707.1612
  • totolink f1-v2_firmware 2.1.1-b20150708.1646
  • totolink f2-v1_firmware 2.1.0-b20150320.1611
  • totolink n150rt-v2_firmware 2.1.1-b20150708.1548
  • totolink n151rt-v2_firmware 1.1-b20150708.1559
  • totolink n300rh-v2_firmware 2.0.1-b20150708.1625
  • totolink n300rh-v3_firmware 3.0.0-b20150331.0858
  • totolink n300rt-v2_firmware 2.1.1-b20150708.1613

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Exploit prediction

4.40% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • pierrekim.github.io https://pierrekim.github.io/blog/2015-07-16-backdoor-and-RCE-found-in-8-TOTOLINK-products.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 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.