Cyber Resilience

CVE-2025-70238

HighPublic PoC

Published: 09 March 2026

Published
09 March 2026
Modified
11 March 2026
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0009 26.0th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-70238 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Dlink Dir-513 Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).

Deeper analysis

CVE-2025-70238 is a stack buffer overflow vulnerability (CWE-121) in D-Link DIR-513 router version 1.10. The flaw occurs via the curTime parameter sent to the goform/formSetWAN_Wizard52 endpoint. It carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) and was published on 2026-03-09T15:15:52.460.

Unauthenticated attackers can exploit this vulnerability remotely over the network with low attack complexity and no user interaction. Exploitation results in high availability impact, enabling denial-of-service conditions such as device crashes, while confidentiality and integrity remain unaffected.

Mitigation details are available in vendor advisories, including the D-Link security bulletin at https://www.dlink.com/en/security-bulletin/, the DIR-513 product support page at https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DIR-513, and a GitHub CVE report at https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2025-70238.

EU & UK References

Vulnerability details

Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetWAN_Wizard52.

CWE(s)
CWE-121

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

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.
attack.mitre.org →
T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

Remote unauthenticated exploitation of web management interface (public-facing app) via crafted parameter causing stack overflow and device crash/DoS.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2025-70249Same product: Dlink Dir-513
CVE-2025-70243Same product: Dlink Dir-513
CVE-2025-70250Same product: Dlink Dir-513
CVE-2025-70251Same product: Dlink Dir-513
CVE-2025-70227Same product: Dlink Dir-513
CVE-2025-70247Same product: Dlink Dir-513
CVE-2025-70223Same product: Dlink Dir-513
CVE-2025-70246Same product: Dlink Dir-513
CVE-2025-70232Same product: Dlink Dir-513
CVE-2025-70218Same product: Dlink Dir-513

Affected Assets

dlink
dir-513 firmware
1.10

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Timely application of vendor patches from the D-Link security bulletin directly remediates the stack buffer overflow flaw in CVE-2025-70238.

SI-10 Information Input Validation good match
prevent

Validates the curTime parameter at the goform/formSetWAN_Wizard52 endpoint to prevent the stack buffer overflow exploitation.

SI-16 Memory Protection good match
prevent

Implements memory protections such as stack canaries to safeguard against stack buffer overflow vulnerabilities like CVE-2025-70238.

References