CVE-2025-7550
Published: 13 July 2025
Summary
CVE-2025-7550 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Fh1201 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 vulnerability identified as CVE-2025-7550 affects the Tenda FH1201 router running firmware version 1.2.0.14(408). It resides in the fromGstDhcpSetSer function within the /goform/GstDhcpSetSer endpoint and stems from improper handling of the dips argument, resulting in a stack-based buffer overflow. The issue is tracked under CWE-119 and CWE-121 and carries a CVSS 4.0 score of 7.4, reflecting network-accessible impact with high consequences for confidentiality, integrity, and availability.
An authenticated remote attacker can supply a crafted dips parameter to the affected endpoint and trigger the overflow, potentially leading to arbitrary code execution or denial of service on the device. Public proof-of-concept code has been released that demonstrates the flaw, confirming that exploitation requires only low attack complexity once network access and valid credentials are obtained.
The associated EPSS score remains flat at 0.0157 with no observed increase after disclosure, indicating limited evidence of active exploitation interest to date. Available references consist primarily of public vulnerability databases and a GitHub repository containing the proof-of-concept, without reference to vendor patches or official mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21281
Vulnerability details
A vulnerability was found in Tenda FH1201 1.2.0.14(408). It has been classified as critical. Affected is the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer. The manipulation of the argument dips leads to stack-based buffer overflow. It is possible to launch the…
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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 router's web interface (/goform/GstDhcpSetSer) enables remote code execution via exploitation of a public-facing application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates the CVE by requiring timely remediation of the known stack-based buffer overflow flaw through firmware patching or updates.
Prevents exploitation by enforcing input validation on the 'dips' argument in the /goform/GstDhcpSetSer endpoint to block buffer overflow triggers.
Mitigates stack-based buffer overflow exploitation via memory protections like stack canaries and address space layout randomization in the affected firmware.