CVE-2025-70242
Published: 10 March 2026
Summary
CVE-2025-70242 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 3.1th 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-2025-70242 is a stack buffer overflow vulnerability (CWE-121) in the D-Link DIR-513 router version 1.10. The flaw occurs via the webPage parameter in the goform/formSetWanPPTP web endpoint, potentially allowing memory corruption when processing malformed input.
Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. Exploitation results in a denial-of-service condition with high availability impact but no confidentiality or integrity effects, as reflected in the CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Mitigation guidance and patches 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-2025-70242. Security practitioners should consult these sources for firmware updates or workarounds.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-208522
Vulnerability details
Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the webPage parameter to goform/formSetWanPPTP.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated remote stack buffer overflow in a public web management endpoint directly enables exploitation of a public-facing network device application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation of the webPage parameter on the formSetWanPPTP endpoint to reject malformed input that triggers the stack buffer overflow.
Enforces memory-protection mechanisms that can block or contain the stack corruption caused by oversized webPage values before DoS occurs.
Limits the high-availability impact of the unauthenticated remote overflow by throttling or isolating traffic to the vulnerable WAN-PPTP form handler.