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Fencer Vulns
high 7.5

CVE-2022-22278 json

A vulnerability in SonicOS CFS (Content filtering service) returns a large 403 forbidden HTTP response message to the source address when u…

published 2022-04-27 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-27425

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

A vulnerability in SonicOS CFS (Content filtering service) returns a large 403 forbidden HTTP response message to the source address when users try to access prohibited resource this allows an attacker to cause HTTP Denial of Service (DoS) attack

Patch / fix

  • sonicwall tz300p_firmware 7.0.1
  • sonicwall tz300w_firmware 7.0.1
  • sonicwall tz350_firmware 7.0.1
  • sonicwall tz350w_firmware 7.0.1
  • sonicwall nssp_10700_firmware 7.0.1.0
  • sonicwall nssp_11700_firmware 7.0.1.0
  • sonicwall nssp_12400_firmware 7.0.1.0
  • sonicwall nssp_12800_firmware 7.0.1.0
  • sonicwall nssp_13700_firmware 7.0.1.0
  • sonicwall nssp_15700_firmware 7.0.1.0
  • sonicwall tz370_firmware 7.0.1
  • sonicwall tz370w_firmware 7.0.1
  • sonicwall tz400_firmware 7.0.1
  • sonicwall nsv_10_firmware 7.0.1.0
  • sonicwall nsv_100_firmware 7.0.1.0
  • sonicwall nsv_1600_firmware 7.0.1.0
  • sonicwall nsv_200_firmware 7.0.1.0
  • sonicwall nsv_25_firmware 7.0.1.0
  • sonicwall nsv_270_firmware 7.0.1.0
  • sonicwall nsv_300_firmware 7.0.1.0

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • SonicWall SonicOS

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.