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Fencer Vulns
medium 6.5

CVE-2026-22316 json

Buffer Overflow using TFTP Filename

published 2026-03-18 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12785

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

A remote attacker with user privileges for the webUI can use the setting of the TFTP Filename with a POST Request to trigger a stack-based Buffer Overflow, resulting in a DoS attack.

Patch / fix

  • Phoenix Contact FL SWITCH 2005 3.53
  • Phoenix Contact FL SWITCH 2008 3.53
  • Phoenix Contact FL SWITCH 2016 3.53
  • Phoenix Contact FL SWITCH 2105 3.53
  • Phoenix Contact FL SWITCH 2108 3.53
  • Phoenix Contact FL SWITCH 2116 3.53
  • Phoenix Contact FL SWITCH 2204-2TC-2SFX 3.53
  • Phoenix Contact FL SWITCH 2205 3.53
  • Phoenix Contact FL SWITCH 2206-2FX 3.53
  • Phoenix Contact FL SWITCH 2206-2FX SM 3.53
  • Phoenix Contact FL SWITCH 2206-2FX SM ST 3.53
  • Phoenix Contact FL SWITCH 2206-2FX ST 3.53
  • Phoenix Contact FL SWITCH 2206-2SFX 3.53
  • Phoenix Contact FL SWITCH 2206-2SFX PN 3.53
  • Phoenix Contact FL SWITCH 2206C-2FX 3.53
  • Phoenix Contact FL SWITCH 2207-FX 3.53
  • Phoenix Contact FL SWITCH 2207-FX SM 3.53
  • Phoenix Contact FL SWITCH 2208 3.53
  • Phoenix Contact FL SWITCH 2208 PN 3.53
  • Phoenix Contact FL SWITCH 2208C 3.53
  • Phoenix Contact FL SWITCH 2212-2TC-2SFX 3.53
  • Phoenix Contact FL SWITCH 2214-2FX 3.53
  • Phoenix Contact FL SWITCH 2214-2FX SM 3.53
  • Phoenix Contact FL SWITCH 2214-2SFX 3.53
  • Phoenix Contact FL SWITCH 2214-2SFX PN 3.53
  • Phoenix Contact FL SWITCH 2216 3.53
  • Phoenix Contact FL SWITCH 2216 PN 3.53
  • Phoenix Contact FL SWITCH 2304-2GC-2SFP 3.53
  • Phoenix Contact FL SWITCH 2306-2SFP 3.53
  • Phoenix Contact FL SWITCH 2306-2SFP PN 3.53

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Phoenix Contact FL SWITCH 2005
  • Phoenix Contact FL SWITCH 2008
  • Phoenix Contact FL SWITCH 2016
  • Phoenix Contact FL SWITCH 2105
  • Phoenix Contact FL SWITCH 2108
  • Phoenix Contact FL SWITCH 2116
  • Phoenix Contact FL SWITCH 2204-2TC-2SFX
  • Phoenix Contact FL SWITCH 2205
  • Phoenix Contact FL SWITCH 2206-2FX
  • Phoenix Contact FL SWITCH 2206-2FX SM
  • Phoenix Contact FL SWITCH 2206-2FX SM ST
  • Phoenix Contact FL SWITCH 2206-2FX ST
  • Phoenix Contact FL SWITCH 2206-2SFX
  • Phoenix Contact FL SWITCH 2206-2SFX PN
  • Phoenix Contact FL SWITCH 2206C-2FX
  • Phoenix Contact FL SWITCH 2207-FX
  • Phoenix Contact FL SWITCH 2207-FX SM
  • Phoenix Contact FL SWITCH 2208
  • Phoenix Contact FL SWITCH 2208 PN
  • Phoenix Contact FL SWITCH 2208C
  • Phoenix Contact FL SWITCH 2212-2TC-2SFX
  • Phoenix Contact FL SWITCH 2214-2FX
  • Phoenix Contact FL SWITCH 2214-2FX SM
  • Phoenix Contact FL SWITCH 2214-2SFX
  • Phoenix Contact FL SWITCH 2214-2SFX PN
  • Phoenix Contact FL SWITCH 2216
  • Phoenix Contact FL SWITCH 2216 PN
  • Phoenix Contact FL SWITCH 2304-2GC-2SFP
  • Phoenix Contact FL SWITCH 2306-2SFP
  • Phoenix Contact FL SWITCH 2306-2SFP PN
  • Phoenix Contact FL SWITCH 2308
  • Phoenix Contact FL SWITCH 2308 PN
  • Phoenix Contact FL SWITCH 2312-2GC-2SFP
  • Phoenix Contact FL SWITCH 2314-2SFP
  • Phoenix Contact FL SWITCH 2314-2SFP PN
  • Phoenix Contact FL SWITCH 2316
  • Phoenix Contact FL SWITCH 2316 PN
  • Phoenix Contact FL SWITCH 2404-2TC-2SFX
  • Phoenix Contact FL SWITCH 2406-2SFX
  • Phoenix Contact FL SWITCH 2406-2SFX PN
  • Phoenix Contact FL SWITCH 2408
  • Phoenix Contact FL SWITCH 2408 PN
  • Phoenix Contact FL SWITCH 2412-2TC-2SFX
  • Phoenix Contact FL SWITCH 2414-2SFX
  • Phoenix Contact FL SWITCH 2414-2SFX PN
  • Phoenix Contact FL SWITCH 2416
  • Phoenix Contact FL SWITCH 2416 PN
  • Phoenix Contact FL SWITCH 2504-2GC-2SFP
  • Phoenix Contact FL SWITCH 2506-2SFP
  • Phoenix Contact FL SWITCH 2506-2SFP PN

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

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.