CVE-2025-7807
Published: 18 July 2025
Summary
CVE-2025-7807 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Fh451 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 critical stack-based buffer overflow vulnerability, tracked as CVE-2025-7807, affects the Tenda FH451 router running firmware version 1.0.0.9. The flaw resides in the fromSafeUrlFilter function within the /goform/SafeUrlFilter endpoint, where improper handling of the Go or page argument allows an attacker to overwrite the stack.
An authenticated remote attacker can send a crafted HTTP request to trigger the overflow. Successful exploitation grants the ability to execute arbitrary code or crash the device, with the public exploit code already available on GitHub demonstrating remote code execution under the CVSS 7.4 rating.
The EPSS score has remained flat at 0.0157 since disclosure, indicating limited observed exploitation interest to date. Public references consist of technical write-ups and proof-of-concept submissions on VulDB and GitHub rather than vendor-issued patches or mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21934
Vulnerability details
A vulnerability, which was classified as critical, has been found in Tenda FH451 1.0.0.9. This issue affects the function fromSafeUrlFilter of the file /goform/SafeUrlFilter. The manipulation of the argument Go/page leads to stack-based buffer overflow. The attack may be initiated…
more
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 web interface (/goform/SafeUrlFilter) of Tenda FH451 router firmware, remotely exploitable via manipulated 'Go/page' parameter, with public PoC, directly enables exploitation of a public-facing application.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Timely flaw remediation through firmware patching directly eliminates the stack-based buffer overflow in the fromSafeUrlFilter function.
Information input validation ensures proper bounds checking on the Go/page argument to prevent triggering the stack buffer overflow.
Memory protection mechanisms like stack canaries and non-executable memory mitigate exploitation of the stack-based buffer overflow for arbitrary code execution.