CVE-2025-4346
Published: 06 May 2025
Summary
CVE-2025-4346 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, 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 has been identified in the D-Link DIR-600L router up to firmware version 2.07B01. The issue resides in the formSetWAN_Wizard534 function, where improper handling of the host argument triggers a buffer overflow. The flaw is tracked under CVE-2025-4346 with a CVSS 4.0 score of 8.7 and is associated with CWE-119 and CWE-120. It affects only devices that are no longer supported by the vendor.
An authenticated remote attacker can supply a crafted host parameter to the affected function, leading to memory corruption that may allow arbitrary code execution or a denial of service. Because the attack can be performed over the network without user interaction beyond valid credentials, successful exploitation grants an adversary control over the device and its network traffic.
The product has reached end-of-life, and D-Link provides no patches or ongoing support for the affected hardware. Public references consist of vulnerability disclosures on VulDB and a GitHub repository containing technical details, with no additional mitigation guidance available from the vendor.
EPSS remains low at 0.0115 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-13586
Vulnerability details
A vulnerability was found in D-Link DIR-600L up to 2.07B01. It has been classified as critical. Affected is the function formSetWAN_Wizard534. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. This…
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vulnerability only affects products that are no longer supported by the maintainer.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
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.