CVE-2022-30114: A heap-based buffer overflow in a network service in Fastweb FASTGate MediaAccess FGA2130FWB, firmware version

Q: How do I fix CVE-2022-30114?

fastgate vdsl2 dga4131fwb firmware: upgrade to 18.3.n.0482_fw_264_dga4131; fastgate gpon fga2130fwb firmware: upgrade to 18.3.n.0482_fw_233_fga2130. Exact commands for each OS are on this page.

Q: Is CVE-2022-30114 being exploited?

CVE-2022-30114 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-30114 affect?

CVE-2022-30114 affects fastgate vdsl2 dga4131fwb firmware, fastgate gpon fga2130fwb firmware. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2022-30114?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADEUPGRADE

CVE-2022-30114 is a high-severity flaw (CVSS 7.5) affecting fastgate vdsl2 dga4131fwb firmware, fastgate gpon fga2130fwb firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-05-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fastweb

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-05-19 12:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

fastweb fastgate vdsl2 dga4131fwb firmware UPGRADE

Affected: < 18.3.n.0482_fw_264_dga4131

Fixed in: 18.3.n.0482_fw_264_dga4131

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

fastweb fastgate gpon fga2130fwb firmware UPGRADE

Affected: < 18.3.n.0482_fw_233_fga2130

Fixed in: 18.3.n.0482_fw_233_fga2130

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-30114?

fastgate vdsl2 dga4131fwb firmware: upgrade to 18.3.n.0482_fw_264_dga4131; fastgate gpon fga2130fwb firmware: upgrade to 18.3.n.0482_fw_233_fga2130. Exact commands for each OS are on this page.

Is CVE-2022-30114 being exploited?

CVE-2022-30114 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-30114 affect?

CVE-2022-30114 affects fastgate vdsl2 dga4131fwb firmware, fastgate gpon fga2130fwb firmware. Severity is high (CVSS 7.5). 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

How urgent is CVE-2022-30114?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

← Back to latest CVEs