How severe is CVE-2024-26000?

CVE-2024-26000 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-26000 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26000?

CVE-2024-26000 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-2024-26000?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-26000 have an EU (EUVD) identifier?

Yes. CVE-2024-26000 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23296.

When was CVE-2024-26000 published?

CVE-2024-26000 was published on 2024-03-12 and last updated on 2026-06-17.

CVE-2024-26000

CVE-2024-26000 is a medium-severity vulnerability in Phoenixcontact Charx Sec-3000 Firmware with a CVSS 3.x base score of 5.9. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23296
Weakness: CWE-125
Affected product: Phoenixcontact Charx Sec-3000 Firmware
Published: 2024-03-12
Last modified: 2026-06-17

Description

An unauthenticated remote attacker can read 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-2024-26000?: An unauthenticated remote attacker can read 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-2024-26000?: CVE-2024-26000 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-26000 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26000?: CVE-2024-26000 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-2024-26000?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-26000 have an EU (EUVD) identifier?: Yes. CVE-2024-26000 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23296.
When was CVE-2024-26000 published?: CVE-2024-26000 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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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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