How severe is CVE-2024-26001?

CVE-2024-26001 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2024-26001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26001?

CVE-2024-26001 primarily affects Phoenixcontact Charx Sec-3000 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-26001?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-26001 have an EU (EUVD) identifier?

Yes. CVE-2024-26001 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23297.

When was CVE-2024-26001 published?

CVE-2024-26001 was published on 2024-03-12 and last updated on 2026-06-17.

CVE-2024-26001

CVE-2024-26001 is a high-severity vulnerability in Phoenixcontact Charx Sec-3000 Firmware with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23297
Weakness: CWE-787
Affected product: Phoenixcontact Charx Sec-3000 Firmware
Published: 2024-03-12
Last modified: 2026-06-17

Description

An unauthenticated remote attacker can write memory out of bounds due to improper input validation in the MQTT stack. The brute force attack is not always successful because of memory randomization.

Frequently asked questions

What is CVE-2024-26001?: An unauthenticated remote attacker can write memory out of bounds due to improper input validation in the MQTT stack. The brute force attack is not always successful because of memory randomization.
How severe is CVE-2024-26001?: CVE-2024-26001 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2024-26001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26001?: CVE-2024-26001 primarily affects Phoenixcontact Charx Sec-3000 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-26001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-26001 have an EU (EUVD) identifier?: Yes. CVE-2024-26001 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23297.
When was CVE-2024-26001 published?: CVE-2024-26001 was published on 2024-03-12 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2024-011

Affected products (4)

cpe:2.3:o:phoenixcontact:charx_sec-3000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:charx_sec-3050_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:charx_sec-3100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:charx_sec-3150_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Phoenixcontact Charx Sec-3000 Firmware

CVE-2025-25270 — Critical (CVSS 9.8): An unauthenticated remote attacker can alter the device configuration in a way to get remote code execution as root…
CVE-2024-25995 — Critical (CVSS 9.8): An unauthenticated remote attacker can modify configurations to perform a remote code execution, gain root rights or…
CVE-2025-25271 — High (CVSS 8.8): An unauthenticated adjacent attacker is able to configure a new OCPP backend, due to insecure defaults for the…
CVE-2025-25268 — High (CVSS 8.8): An unauthenticated adjacent attacker can modify configuration by sending specific requests to an API-endpoint resulting…
CVE-2024-26288 — High (CVSS 8.7): An unauthenticated remote attacker can influence the communication due to the lack of encryption of sensitive data via…
CVE-2024-6788 — High (CVSS 8.6): A remote unauthenticated attacker can use the firmware update feature on the LAN interface of the device to reset the…

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