Cyber Resilience

CVE-2025-57071

HighPublic PoC

Published: 09 September 2025

Published
09 September 2025
Modified
18 September 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0014 33.8th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-57071 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Tenda G3 Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 33.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Tenda G3 v3.0br_V15.11.0.17 was discovered to contain a stack overflow in the vpnUsers parameter in the formAddVpnUsers function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

CWE(s)
CWE-121

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

Stack overflow vulnerability in router's web interface enables application exploitation for endpoint denial of service by crashing the service via crafted VPN user addition request.

Affected Assets

tenda
g3 firmware
≤ 15.11.0.17\(9502\)

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References