CVE-2025-4348
Published: 06 May 2025
Summary
CVE-2025-4348 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Dlink Dir-600L Firmware. Its CVSS base score is 8.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 21.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A vulnerability rated critical has been identified in the D-Link DIR-600L router up to firmware version 2.07B01. The issue resides in the formSetWanL2TP function, where improper handling of the host argument triggers a buffer overflow, tracked under CWE-119 and CWE-120. The flaw affects an end-of-life device line that is no longer supported by the vendor.
An authenticated remote attacker can supply a crafted host value over the network to the affected function, potentially achieving arbitrary code execution or full device compromise with high impact on confidentiality, integrity, and availability. The CVSS 4.0 vector reflects network attack reachability, low complexity, and low privileges required.
No official patches or mitigations are available because the product is unsupported. The listed references point to a public disclosure repository and the vendor's general site but contain no remediation guidance. The associated EPSS score has remained flat at 0.0115 with no observed increase after publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-13577
Vulnerability details
A vulnerability was found in D-Link DIR-600L up to 2.07B01. It has been rated as critical. Affected by this issue is the function formSetWanL2TP. The manipulation of the argument host leads to buffer overflow. The attack may be launched remotely.…
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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?
Buffer overflow in the web interface function formSetWanL2TP via remote manipulation of 'host' argument enables exploitation of a public-facing application on the D-Link DIR-600L router.
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.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
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.