CVE-2025-7419
Published: 10 July 2025
Summary
CVE-2025-7419 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda O3 Firmware. Its CVSS base score is 8.8 (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.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates CVE-2025-7419 by identifying, prioritizing, and applying patches or updates to remediate the stack-based buffer overflow in the httpd component.
Requires validation of the destIP argument in the /goform/setRateTest endpoint to prevent stack-based buffer overflows from malformed input.
Implements memory protections such as stack canaries and address space layout randomization to block exploitation of the stack buffer overflow even if input validation fails.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in the public-facing httpd web interface (/goform/setRateTest) of Tenda O3V2 router via destIP parameter enables remote code execution, directly facilitating T1190: Exploit Public-Facing Application.
NVD Description
A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been classified as critical. This affects the function fromSpeedTestSet of the file /goform/setRateTest of the component httpd. The manipulation of the argument destIP leads to stack-based buffer overflow. It is…
more
possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Deeper analysisAI
CVE-2025-7419 is a critical stack-based buffer overflow vulnerability (CWE-119, CWE-121) affecting Tenda O3V2 firmware version 1.0.0.12(3880). The issue resides in the fromSpeedTestSet function within the /goform/setRateTest endpoint of the httpd component, where manipulation of the destIP argument triggers the overflow.
Attackers can exploit this vulnerability remotely over the network (AV:N) with low complexity (AC:L), requiring only low privileges (PR:L) and no user interaction (UI:N). The CVSS v3.1 base score of 8.8 (C:H/I:H/A:H) indicates high impacts on confidentiality, integrity, and availability, potentially enabling arbitrary code execution in the context of the httpd process.
Advisories referenced in VULDB entries (ctiid.315879, id.315879) and a GitHub repository detail the vulnerability, including a proof-of-concept exploit for the issue. No patches or specific mitigations are described in the provided information.
The exploit has been publicly disclosed and may be used by attackers targeting vulnerable Tenda O3V2 devices.
Details
- CWE(s)