Cyber Resilience

CVE-2025-70227

HighPublic PoC

Published: 10 March 2026

Published
10 March 2026
Modified
11 March 2026
KEV Added
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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-2025-70227 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-2025-70227 is a stack buffer overflow vulnerability (CWE-121) in the D-Link DIR-513 router version 1.10. The flaw occurs via the nextPage parameter sent to the goform/formLanguageChange endpoint, potentially allowing memory corruption due to insufficient bounds checking on user-supplied input.

With 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), the vulnerability is exploitable remotely over the network by unauthenticated attackers with low complexity and no user interaction required. Exploitation can achieve high-impact denial of service, likely causing the device to crash or become unresponsive.

Mitigation details are referenced in D-Link's 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-2025-70227.

EU & UK References

Vulnerability details

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

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 stack buffer overflow in public web interface directly enables T1190 exploitation; resulting device crash maps to T1499.004 Application or System Exploitation for DoS impact.

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-2025-70238Same product: Dlink Dir-513
CVE-2025-70251Same 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-10 Information Input Validation good match
prevent

Directly enforces bounds checking and validation of user-supplied inputs like the nextPage parameter to prevent stack buffer overflows.

SI-16 Memory Protection good match
prevent

Implements memory safeguards such as stack canaries, ASLR, and DEP to block unauthorized code execution from stack buffer overflow exploits.

SI-2 Flaw Remediation good match
prevent

Mandates timely identification, reporting, and patching of specific flaws like this stack buffer overflow to eliminate the vulnerability.

References