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Fencer Vulns
high 7.8

CVE-2026-44096 json

udhcpc Privilege Escalation

published 2026-07-30 3 mo ago modified 2026-07-31 3 mo ago also EUVD-2026-51031

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

A privilege escalation vulnerability in udhcpc allows a local user "charx-web" to execute arbitrary commands as root, resulting in full system compromise.

Patch / fix

  • Phoenix Contact CHARX SEC-3150 1.9.1
  • Phoenix Contact CHARX SEC-3100 1.9.1
  • Phoenix Contact CHARX SEC-3050 1.9.1
  • Phoenix Contact CHARX SEC-3000 1.9.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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

Affected products

  • Phoenix Contact CHARX SEC-3150
  • Phoenix Contact CHARX SEC-3100
  • Phoenix Contact CHARX SEC-3050
  • Phoenix Contact CHARX SEC-3000

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.