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CVE-2024-26000

PHOENIX CONTACT: Out of bounds read only memory access

HIGH
7.5
CVSS Score
Published: March 12, 2024 at 08:11 AM UTC
Updated: June 17, 2026 at 07:16 AM UTC
8 products affected across 1 vendorCharx Sec 3000 FirmwareCharx Sec 3050 FirmwareCharx Sec 3150 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Charx Sec 3000 Firmware· Phoenix Contact
95%
v < 1.5.1
Affected range stops below 1.5.1, so it looks safe — our inference, not a vendor statement
phoenixcontact-charx-sec-3000 (same device)
Charx Sec 3050 Firmware· Phoenix Contact
95%
v < 1.5.1
Affected range stops below 1.5.1, so it looks safe — our inference, not a vendor statement
phoenixcontact-charx-sec-3050 (same device)
Charx Sec 3100 Firmware· Phoenix Contact
95%
v < 1.5.1
Affected range stops below 1.5.1, so it looks safe — our inference, not a vendor statement
phoenixcontact-charx-sec-3100 (same device)
Charx Sec 3150 Firmware· Phoenix Contact
95%
v < 1.5.1
Affected range stops below 1.5.1, so it looks safe — our inference, not a vendor statement
phoenixcontact-charx-sec-3150 (same device)
CHARX SEC-3000· Phoenix Contact
60%
v ≤ 1.5.0
CHARX SEC-3050· Phoenix Contact
60%
v ≤ 1.5.0
CHARX SEC-3100· Phoenix Contact
60%
v ≤ 1.5.0
CHARX SEC-3150· Phoenix Contact
60%
v ≤ 1.5.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2024-011

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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