Cyber Resilience

CVE-2024-6944

Deserialization in Crmeb ≤ 5.4.0

Published
21 July 2024
Modified
03 January 2025
CVSS Score v4 5.3
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.038 89th percentile
Risk Priority 47 floored blend · peak EPSS

Summary

CVE-2024-6944 is a medium-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Crmeb Crmeb. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 11% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2024-6944 is a deserialization vulnerability in ZhongBangKeJi CRMEB versions up to 5.4.0, specifically in the get_image_base64 function within PublicController.php. The flaw arises from improper handling of the file argument, which permits deserialization of untrusted data and is tracked under CWE-502. It carries a CVSS 4.0 score of 5.3 and can be triggered remotely without authentication.

An authenticated remote attacker can supply a crafted file argument to trigger the deserialization flaw, potentially leading to arbitrary code execution or other impacts on the affected CRMEB instance. The exploit has already been published publicly via a gist and vulnerability databases, enabling straightforward reproduction by anyone with network access to the target.

The vendor was notified prior to disclosure but provided no response, and no official patches or mitigation guidance appear in the available references. The associated EPSS score has remained flat at 0.2493 with no material increase since publication.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

A vulnerability was found in ZhongBangKeJi CRMEB up to 5.4.0 and classified as critical. Affected by this issue is the function get_image_base64 of the file PublicController.php. The manipulation of the argument file leads to deserialization. The attack may be launched…

more

remotely. The exploit has been disclosed to the public and may be used. VDB-272066 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-3234Same product: Crmeb Crmeb
CVE-2024-6943Same product: Crmeb Crmeb
CVE-2023-3232Same product: Crmeb Crmeb
CVE-2024-52726Same product: Crmeb Crmeb
CVE-2024-1703Same product: Crmeb Crmeb
CVE-2024-1704Same product: Crmeb Crmeb
CVE-2024-36837Same product: Crmeb Crmeb
CVE-2023-1165Same product: Crmeb Crmeb
CVE-2023-3233Same product: Crmeb Crmeb
CVE-2025-25763Same product: Crmeb Crmeb

Affected Assets

crmeb
crmeb
≤ 5.4.0

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and evaluation can uncover deserialization flaws before deployment.

Input validation directly stops deserialization of untrusted data by ensuring inputs are valid before processing.

Engineering principles such as safe deserialization and input sanitization structurally prevent the weakness from being introduced.

Integrity verification tools can detect malformed or tampered serialized data after the fact.

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-02 none match
prevents

PR.PS-02 addresses only post-deployment updates/patching and cannot prevent introduction of unsafe deserialization code, yet it can remediate some instances when the flaw exists in outdated libraries or components.

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.

finds

Security testing includes validation of deserialization routines and the use of untrusted data, reducing the likelihood that unsafe object reconstruction will be deployed.

prevents

Requiring vetted libraries, regular updates and SAST before release reduces the likelihood that deserialization logic will accept and act on attacker-controlled serialized objects.

finds

Regular scanning of third-party libraries and timely patching reduce the likelihood that unsafe deserialization vulnerabilities remain active.

none

Mandatory malware scanning of data received over networks or storage media intercepts malicious serialized payloads before they are deserialized by the target application.

References