CVE-2025-8168
Published: 25 July 2025
Summary
CVE-2025-8168 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Dlink Dir-513. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 13.3% of CVEs by exploit likelihood; 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 SA-22 (Unsupported System Components) and SI-10 (Information Input Validation).
Deeper analysis
A vulnerability rated critical has been identified in the D-Link DIR-513 router running firmware version 1.10. It resides in the websAspInit function of the /goform/formSetWanPPPoE endpoint, where improper handling of the curTime argument triggers a buffer overflow. The affected device belongs to a product line that is no longer supported by the vendor, and the issue is tracked under CWE-119, CWE-120, and CWE-787.
Remote attackers with valid credentials can supply a crafted curTime value to the endpoint and trigger the overflow, resulting in potential impacts to confidentiality, integrity, and availability as reflected in the CVSS 7.4 vector. Publicly disclosed exploit code is available, enabling unauthenticated or low-privileged remote execution against exposed devices.
The vendor site and disclosure references confirm the product has reached end-of-life with no patches expected. The associated EPSS score remains flat at 0.0292 with no observed increase after publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-22754
Vulnerability details
A vulnerability was found in D-Link DIR-513 1.10. It has been rated as critical. Affected by this issue is the function websAspInit of the file /goform/formSetWanPPPoE. The manipulation of the argument curTime leads to buffer overflow. The attack may be…
more
launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote buffer overflow in web management interface (/goform/formSetWanPPPoE) enables exploitation of public-facing application (T1190), exploitation of remote services for potential RCE/shell (T1210), and DoS via application exploitation (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly validates manipulated inputs like the curTime argument in the web form to prevent buffer overflow exploitation.
Provides memory protections such as address space layout randomization and data execution prevention to mitigate buffer overflow leading to arbitrary code execution.
Prohibits use of unsupported system components like the end-of-support D-Link DIR-513 router, eliminating exposure to unpatchable vulnerabilities.