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 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 18.1% 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).
Deeper analysis
A stack-based buffer overflow vulnerability exists in the Tenda O3V2 1.0.0.12(3880) device, specifically in the fromSpeedTestSet function of the /goform/setRateTest endpoint within the httpd component. The flaw is triggered by unsanitized input to the destIP argument and is tracked under CWE-119 and CWE-121. It received a CVSS 4.0 score of 7.4 with network attack vector and low attack complexity.
An authenticated remote attacker can send a crafted request to the affected endpoint to overflow the stack buffer, leading to arbitrary code execution or denial of service with high impact on confidentiality, integrity, and availability. Public proof-of-concept code has been released, confirming the issue is exploitable over the network without user interaction.
No vendor advisory or patch information is referenced in the available sources. The EPSS score remains flat at 0.0157 with no observed increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21086
Vulnerability details
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.
- CWE(s)
Related Threats
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.
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Affected Assets
Mitigating Controls
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.