CVE-2025-4141
Published: 30 April 2025
Summary
CVE-2025-4141 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Netgear Ex6200 Firmware. Its CVSS base score is 8.7 (High).
Operationally, ranked in the top 20.0% 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 critical buffer overflow vulnerability exists in the Netgear EX6200 firmware version 1.0.3.94, specifically in the function sub_3C03C. The flaw is triggered by improper handling of the host argument, which can be manipulated to cause memory corruption. The issue is tracked under CWE-119 and CWE-120 and carries a CVSS 4.0 score of 8.7, reflecting network-accessible exploitation without authentication or user interaction.
An authenticated remote attacker can supply a crafted host value to the affected function and achieve arbitrary code execution or a denial-of-service condition on the device. Because the attack is initiated over the network and requires only low-privileged access, an adversary positioned to reach the device’s management interface could fully compromise the router’s integrity, confidentiality, and availability.
The vendor was notified prior to disclosure but has not issued a response or patch. Public references consist of a detailed technical write-up on GitHub and entries in the VulDB database; the current EPSS score remains low and unchanged at 0.0128, indicating no observed increase in exploitation interest since publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-12786
Vulnerability details
A vulnerability, which was classified as critical, was found in Netgear EX6200 1.0.3.94. This affects the function sub_3C03C. The manipulation of the argument host leads to buffer overflow. It is possible to initiate the attack remotely. The vendor was contacted…
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early about this disclosure but did not respond in any way.
- 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.