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Fencer Vulns
high 8.8

CVE-2023-2378 json

Ubiquiti EdgeRouter X Web Management command injection

published 2023-04-28 3 y ago modified 2026-07-09 4 mo ago also EUVD-2023-33868

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.6%
EPSS 7.6% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

A flaw has been found in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This affects an unknown function of the component Web Management Interface. This manipulation of the argument suffix-rate-up causes command injection. The attack may be initiated remotely. The exploit has been published and may be used. The real existence of this vulnerability is still doubted at the moment. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

Patch / fix

  • ui er-x_firmware 2.0.9
  • ui er-x-sfp_firmware 2.0.9

Exploit prediction

7.62% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/leetsun/IoT/tree/main/EdgeRouterX/CI/4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CNA 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA 3.0 7.2 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA 2.0 8.3 AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
CNA 4.0 7.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 2.0 8.3 AV:N/AC:L/Au:M/C:C/I:C/A:C

Affected products

  • Ubiquiti EdgeRouter X

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

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.