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Fencer Intel
high 7.5

CVE-2022-30114 json

A heap-based buffer overflow in a network service in Fastweb FASTGate MediaAccess FGA2130FWB, firmware version 18.3.n.0482_FW_230_FGA2130,…

published 3y ago modified 4mo ago also EUVD-2022-35327

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

A heap-based buffer overflow in a network service in Fastweb FASTGate MediaAccess FGA2130FWB, firmware version 18.3.n.0482_FW_230_FGA2130, and DGA4131FWB, firmware version up to 18.3.n.0462_FW_261_DGA4131, allows a remote attacker to reboot the device through a crafted HTTP request, causing DoS.

Patch / fix

  • fastweb fastgate_vdsl2_dga4131fwb_firmware 18.3.n.0482_fw_264_dga4131
  • fastweb fastgate_gpon_fga2130fwb_firmware 18.3.n.0482_fw_233_fga2130

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

2.40% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • str0ng4le.github.io https://str0ng4le.github.io/jekyll/update/2023/05/12/fastgate-bof-cve-2022-30114/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

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.