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Fencer Intel
critical 9.8

CVE-2018-9285 json

Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U, RT-AC1900, RT-AC2900, and RT-AC3100 devices before…

published 2018-04-04 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20879

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.6%
EPSS 3.6% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U, RT-AC1900, RT-AC2900, and RT-AC3100 devices before 3.0.0.4.384_10007; RT-N18U devices before 3.0.0.4.382.39935; RT-AC87U and RT-AC3200 devices before 3.0.0.4.382.50010; and RT-AC5300 devices before 3.0.0.4.384.20287 allows OS command injection via the pingCNT and destIP fields of the SystemCmd variable.

Patch / fix

  • asus rt-ac66u_firmware 3.0.0.4.384.10007
  • asus rt-ac68u_firmware 3.0.0.4.384.10007
  • asus rt-ac86u_firmware 3.0.0.4.384.10007
  • asus rt-ac88u_firmware 3.0.0.4.384.10007
  • asus rt-ac1900_firmware 3.0.0.4.384.10007
  • asus rt-ac2900_firmware 3.0.0.4.384.10007
  • asus rt-ac3100_firmware 3.0.0.4.384.10007
  • asus rt-n18u_firmware 3.0.0.4.382.39935
  • asus rt-ac87u_firmware 3.0.0.4.382.50010
  • asus rt-ac3200_firmware 3.0.0.4.382.50010
  • asus rt-ac5300_firmware 3.0.0.4.384.20287

Exploit prediction

3.56% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/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

Classification

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

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.