CVE-2024-6421: An unauthenticated remote attacker can read out sensitive device information through a incorrectly configured

Q: How do I fix CVE-2024-6421?

oit700-f113-b12-cb firmware: upgrade to newer than 2.11.0; oit500-f113-b12-cb firmware: upgrade to newer than 2.11.0; oit200-f113-b12-cb firmware: upgrade to newer than 2.11.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-6421 being exploited?

CVE-2024-6421 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-2024-6421 affect?

CVE-2024-6421 affects oit700-f113-b12-cb firmware, oit500-f113-b12-cb firmware, oit200-f113-b12-cb firmware. Severity is high (CVSS 7.5). An unauthenticated remote attacker can read out sensitive device information through a incorrectly configured FTP service.

Q: How urgent is CVE-2024-6421?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEUPGRADEUPGRADE

CVE-2024-6421 is a high-severity flaw (CVSS 7.5) affecting oit700-f113-b12-cb firmware, oit500-f113-b12-cb firmware, oit200-f113-b12-cb firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An unauthenticated remote attacker can read out sensitive device information through a incorrectly configured FTP service.

Why this priority

High severity
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	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-552
Published	2024-07-10
Last modified	2026-06-17

Publisher (CNA): CERT VDE · Vendor: pepperl-fuchs

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

Am I affected?

Timeline

2024-07-10 08:15 UTCPublished CVE record published
2026-06-17 08:17 UTCUpdated Record last modified

pepperl-fuchs oit700-f113-b12-cb firmware UPGRADE

Affected: <= 2.11.0

Fixed in: newer than 2.11.0

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.

pepperl-fuchs oit500-f113-b12-cb firmware UPGRADE

Affected: <= 2.11.0

Fixed in: newer than 2.11.0

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.

pepperl-fuchs oit200-f113-b12-cb firmware UPGRADE

Affected: <= 2.11.0

Fixed in: newer than 2.11.0

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.

pepperl-fuchs oit1500-f113-b12-cb firmware UPGRADE

Affected: <= 2.11.0

Fixed in: newer than 2.11.0

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.

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-2024-6421?

oit700-f113-b12-cb firmware: upgrade to newer than 2.11.0; oit500-f113-b12-cb firmware: upgrade to newer than 2.11.0; oit200-f113-b12-cb firmware: upgrade to newer than 2.11.0. Exact commands for each OS are on this page.

Is CVE-2024-6421 being exploited?

CVE-2024-6421 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-2024-6421 affect?

CVE-2024-6421 affects oit700-f113-b12-cb firmware, oit500-f113-b12-cb firmware, oit200-f113-b12-cb firmware. Severity is high (CVSS 7.5). An unauthenticated remote attacker can read out sensitive device information through a incorrectly configured FTP service.

How urgent is CVE-2024-6421?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-6422 CRITICAL 9.8 UPGRADE UPGRADE An unauthenticated remote attacker can manipulate the device via Telnet, stop processes, read, delete and chan

References

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