CVE-2022-43470: Cross-site request forgery (CSRF) vulnerability in +F FS040U software versions v2.3.4 and earlier, +F FS020W s

Q: How do I fix CVE-2022-43470?

fs040u firmware: upgrade to newer than 2.3.4; fs020w firmware: upgrade to newer than 4.0.0; fs030w firmware: upgrade to newer than 3.3.5. Exact commands for each OS are on this page.

Q: Is CVE-2022-43470 being exploited?

CVE-2022-43470 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-2022-43470 affect?

CVE-2022-43470 affects fs040u firmware, fs020w firmware, fs030w firmware. Severity is high (CVSS 7.3). Cross-site request forgery (CSRF) vulnerability in +F FS040U software versions v2.3.4 and earlier, +F FS020W software versions v4.0.0 and earlier, +F FS030W software versions v3.3.5 and earlier, and +F FS040W software versions v1.4.1 and ea

Routine

HIGH 7.3UPGRADEUPGRADEUPGRADE

CVE-2022-43470 is a high-severity flaw (CVSS 7.3) affecting fs040u firmware, fs020w firmware, fs030w firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site request forgery (CSRF) vulnerability in +F FS040U software versions v2.3.4 and earlier, +F FS020W software versions v4.0.0 and earlier, +F FS030W software versions v3.3.5 and earlier, and +F FS040W software versions v1.4.1 and earlier allows an adjacent attacker to hijack the authentication of an administrator and user's unintended operations such as to reboot the product and/or reset the configuration to the initial set-up may be perf

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-352
Published	2022-12-05
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: fsi

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

Am I affected?

Timeline

2022-12-05 04:15 UTCPublished CVE record published
2026-06-17 05:06 UTCUpdated Record last modified

fsi fs040u firmware UPGRADE

Affected: <= 2.3.4

Fixed in: newer than 2.3.4

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.

fsi fs020w firmware UPGRADE

Affected: <= 4.0.0

Fixed in: newer than 4.0.0

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.

fsi fs030w firmware UPGRADE

Affected: <= 3.3.5

Fixed in: newer than 3.3.5

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.

fsi fs040w firmware UPGRADE

Affected: <= 1.4.1

Fixed in: newer than 1.4.1

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-2022-43470?

fs040u firmware: upgrade to newer than 2.3.4; fs020w firmware: upgrade to newer than 4.0.0; fs030w firmware: upgrade to newer than 3.3.5. Exact commands for each OS are on this page.

Is CVE-2022-43470 being exploited?

CVE-2022-43470 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-2022-43470 affect?

CVE-2022-43470 affects fs040u firmware, fs020w firmware, fs030w firmware. Severity is high (CVSS 7.3). Cross-site request forgery (CSRF) vulnerability in +F FS040U software versions v2.3.4 and earlier, +F FS020W software versions v4.0.0 and earlier, +F FS030W software versions v3.3.5 and earlier, and +F FS040W software versions v1.4.1 and ea

How urgent is CVE-2022-43470?

Priority 29/100. High severity

Related CVEs

CVE-2022-43442 MEDIUM 4.6 UPGRADE Plaintext storage of a password vulnerability exists in +F FS040U software versions v2.3.4 and earlier, which

References

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