CVE-2025-7602
Published: 14 July 2025
Summary
CVE-2025-7602 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Dlink Di-8100 Firmware. Its CVSS base score is 7.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 18.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability classified as critical exists in the D-Link DI-8100 firmware version 16.07.26A1, specifically in the HTTP Request Handler component's handling of the file /arp_sys.asp. The issue stems from improper input validation that permits a stack-based buffer overflow, tracked under CWE-119 and CWE-121, and carries a CVSS 4.0 score of 7.3 reflecting high impact on confidentiality, integrity, and availability when successfully exploited.
The flaw can be triggered remotely by an attacker who already possesses administrative credentials. Successful exploitation grants the ability to execute arbitrary code on the device, potentially leading to full compromise of the router's operations and network traffic.
Publicly available references include a detailed proof-of-concept on GitHub along with entries in VulDB, but no vendor advisory or firmware update addressing the issue is referenced in the available sources. The EPSS score has remained flat at 0.0151 with no observed increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21345
Vulnerability details
A vulnerability was found in D-Link DI-8100 16.07.26A1 and classified as critical. This issue affects some unknown processing of the file /arp_sys.asp of the component HTTP Request Handler. The manipulation leads to stack-based buffer overflow. The attack may be initiated…
more
remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in HTTP request handler (/arp_sys.asp) on D-Link DI-8100 router enables remote exploitation of a public-facing web application or remote service, potentially leading to code execution or DoS.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.