What’s Vulnerable › Vulnerabilities

CVE-2024-26001: PHOENIX CONTACT: Out of bounds write only memory access

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-12 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• Phoenixcontact Charx Sec-3000 Firmware: before 1.5.1 — fixed in 1.5.1
• Phoenixcontact Charx Sec-3050 Firmware: before 1.5.1 — fixed in 1.5.1
• Phoenixcontact Charx Sec-3100 Firmware: before 1.5.1 — fixed in 1.5.1
• Phoenixcontact Charx Sec-3150 Firmware: before 1.5.1 — fixed in 1.5.1

How to fix

Upgrade to a fixed version: Phoenixcontact Charx Sec-3000 Firmware 1.5.1; Phoenixcontact Charx Sec-3050 Firmware 1.5.1; Phoenixcontact Charx Sec-3100 Firmware 1.5.1; Phoenixcontact Charx Sec-3150 Firmware 1.5.1. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2024-26001 or the next vulnerability affects your stack