Security Resilience

CVE-2024-0816

Memory Safety in Zyxel Lte3202-M437 Firmware 1.00\(abwf.3\)c0

Published
21 May 2024
Modified
22 January 2025
Patch / advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0014 3th percentile
Risk Priority 41 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2024-0816 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Zyxel Lte3202-M437 Firmware. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked at the 3th 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 SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

The buffer overflow vulnerability in the DX3300-T1 firmware version V5.50(ABVY.4)C0 could allow an authenticated local attacker to cause denial of service (DoS) conditions by executing the CLI command with crafted strings on an affected device.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-5412Same product: Zyxel Ax7501-B0
CVE-2024-8748Same product: Zyxel Ax7501-B0
CVE-2023-37929Same product: Zyxel Ax7501-B0
CVE-2024-9197Same product: Zyxel Ax7501-B0
CVE-2025-7673Same product: Zyxel Emg3525-T50B
CVE-2023-27989Same product: Zyxel Lte7480-M804
CVE-2023-28769Same product: Zyxel Dx5401-B0
CVE-2026-7287Same vendor: Zyxel
CVE-2023-34140Same vendor: Zyxel
CVE-2023-37926Same vendor: Zyxel

Affected Assets

zyxel
lte3202-m437 firmware
1.00\(abwf.3\)c0
zyxel
lte3301-plus firmware
1.00\(abqu.5\)c0
zyxel
lte5388-m804 firmware
1.00\(absq.4\)c0
zyxel
lte5398-m904 firmware
1.00\(abq.4\)c0
zyxel
lte7240-m403 firmware
2.00\(abmg.7\)c0
zyxel
lte7480-m804 firmware
1.00\(abra.8\)c0
zyxel
lte7490-m904 firmware
1.00\(abqy.7\)c0
zyxel
nr5103 firmware
4.19\(abyc.5\)c0
zyxel
nr5103e firmware
1.00\(acdj.1\)b3
zyxel
nr5103ev2 firmware
1.00\(aciq.0\)c0
+55 more product configuration(s) — see NVD for full list

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)
  • V5.2.1

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and analysis can find missing size checks before deployment.

Input validation directly enforces size checks before buffer copies.

Engineering principles require bounds checking and safe buffer handling in design.

Memory protection limits the impact of an overflow once it occurs.

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.

ID.RA-01 partial match
blocks

Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.

PR.PS-02 partial match
blocks

Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.

PR.PS-06 partial match
blocks

Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.

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.

removes
removes
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References