CVE-2025-7571
Published: 14 July 2025
Summary
CVE-2025-7571 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Utt 840G 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 18.5% 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 buffer overflow vulnerability tracked as CVE-2025-7571 affects the UTT HiPER 840G wireless router in firmware versions up to 3.1.1-190328. The flaw resides in an unknown function within the /goform/aspApBasicConfigUrcp endpoint and is triggered by unsanitized input supplied to the Username argument, corresponding to CWE-119 and CWE-120 weaknesses.
Remote attackers who possess valid low-privileged credentials can send a crafted HTTP request to trigger the overflow, resulting in full compromise of confidentiality, integrity, and availability on the device. The CVSS 4.0 vector AV:N/AC:L/AT:N/PR:L/UI:N scores 7.4 and an exploit proof-of-concept has already been published.
No vendor patch or mitigation guidance is available; the manufacturer was notified prior to disclosure but did not respond. Public references include a working PoC hosted on GitHub, while the EPSS score has remained flat at 0.0149 with no observed increase since publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21305
Vulnerability details
A vulnerability classified as critical has been found in UTT HiPER 840G up to 3.1.1-190328. This affects an unknown part of the file /goform/aspApBasicConfigUrcp. The manipulation of the argument Username leads to buffer overflow. It is possible to initiate the…
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attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in web form (/goform/aspApBasicConfigUrcp) enables remote code execution against a network device's public-facing administrative interface.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Validates the Username input to the /goform/aspApBasicConfigUrcp endpoint to prevent buffer overflows from oversized or malformed data.
Deploys memory protections such as stack canaries, ASLR, and DEP to block exploitation of the buffer overflow even if triggered.
Requires timely identification, reporting, and remediation of the known buffer overflow flaw in UTT HiPER 840G firmware.