Cyber Resilience

CVE-2024-28137

Race Condition in Phoenixcontact Charx Sec-3000 Firmware ≤ 1.5.1

Race Condition
Published
14 May 2024
Modified
23 January 2025
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0025 17th percentile
Risk Priority 56 floored blend · peak EPSS

Summary

CVE-2024-28137 is a high-severity Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367) vulnerability in Phoenixcontact Charx Sec-3000 Firmware. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 17th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-25 (Reference Monitor) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

A local attacker with low privileges can perform a privilege escalation with an init script due to a TOCTOU vulnerability.

CWE(s)
CWE-367

Related Threats

MITRE ATT&CK Enterprise Techniques

T1034 Path Interception Persistence
**This technique has been deprecated.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
T1574 Hijack Execution Flow Stealth
Adversaries may execute their own malicious payloads by hijacking the way operating systems run programs.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-28133Same product: Phoenixcontact Charx Sec-3000
CVE-2025-24006Same product: Phoenixcontact Charx Sec-3000
CVE-2025-25270Same product: Phoenixcontact Charx Sec-3000
CVE-2024-26000Same product: Phoenixcontact Charx Sec-3000
CVE-2024-25998Same product: Phoenixcontact Charx Sec-3000
CVE-2024-25995Same product: Phoenixcontact Charx Sec-3000
CVE-2024-26004Same product: Phoenixcontact Charx Sec-3000
CVE-2025-24003Same product: Phoenixcontact Charx Sec-3000
CVE-2025-24002Same product: Phoenixcontact Charx Sec-3000
CVE-2024-3913Same product: Phoenixcontact Charx Sec-3000

Affected Assets

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

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2
  • V17.2.6

Mitigating Controls (NIST 800-53 r5) AI

AC-25 Reference Monitor good match

A reference monitor that is always invoked and analyzable structurally eliminates the non-atomic check-then-use pattern underlying TOCTOU.

AC-3 Access Enforcement partial match

Access enforcement that performs an atomic check-and-use decision directly stops the window in which a TOCTOU race can be exploited.

SC-39 Process Isolation partial match

Process isolation limits the blast radius of a successful TOCTOU exploitation but does not remove the race itself.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.17 Clock synchronization none match
none

Reliable, synchronized time across systems narrows the exploitable window in which a resource state can change between a security check and its use.

References