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

Q: How do I fix CVE-2022-43442?

fs040u firmware: upgrade to newer than 2.3.4. Exact commands for each OS are on this page.

Q: Is CVE-2022-43442 being exploited?

CVE-2022-43442 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-2022-43442 affect?

CVE-2022-43442 affects fs040u firmware. Severity is medium (CVSS 4.6). Plaintext storage of a password vulnerability exists in +F FS040U software versions v2.3.4 and earlier, which may allow an attacker to obtain the login password of +F FS040U and log in to the management console.

Q: How urgent is CVE-2022-43442?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 4.6UPGRADE

CVE-2022-43442 is a medium-severity flaw (CVSS 4.6) affecting fs040u firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Plaintext storage of a password vulnerability exists in +F FS040U software versions v2.3.4 and earlier, which may allow an attacker to obtain the login password of +F FS040U and log in to the management console.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-522
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.

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-2022-43442?

fs040u firmware: upgrade to newer than 2.3.4. Exact commands for each OS are on this page.

Is CVE-2022-43442 being exploited?

CVE-2022-43442 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-2022-43442 affect?

CVE-2022-43442 affects fs040u firmware. Severity is medium (CVSS 4.6). Plaintext storage of a password vulnerability exists in +F FS040U software versions v2.3.4 and earlier, which may allow an attacker to obtain the login password of +F FS040U and log in to the management console.

How urgent is CVE-2022-43442?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2022-43470 HIGH 7.3 UPGRADE UPGRADE Cross-site request forgery (CSRF) vulnerability in +F FS040U software versions v2.3.4 and earlier, +F FS020W s

References

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