Cyber Resilience

CVE-2025-29359

HighPublic PoC

Published: 13 March 2025

Published
13 March 2025
Modified
01 August 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 0.0020 41.4th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-29359 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Tenda Rx3 Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 41.4th percentile by exploit likelihood (below the median); 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

CVE-2025-29359 is a buffer overflow vulnerability (CWE-120) in the Tenda RX3 router firmware version US_RX3V1.0br_V16.03.13.11_multi_TDE01. The flaw resides in the handling of the deviceId parameter within the /goform/saveParentControlInfo endpoint, which can be triggered by specially crafted input.

The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating it is exploitable over the network with low complexity, no authentication or user interaction required. Remote attackers can send a crafted packet to the affected endpoint, causing a denial of service by crashing the device and disrupting network availability.

Further technical details, including proof-of-concept information, are documented in the referenced analysis at https://github.com/2664521593/mycve/blob/main/Tenda/RX3/tenda_rx3_bof_6.pdf. No official vendor patches or mitigation guidance are specified in available sources.

EU & UK References

Vulnerability details

Tenda RX3 US_RX3V1.0br_V16.03.13.11_multi_TDE01 is vulnerable to Buffer Overflow via the deviceId parameter at /goform/saveParentControlInfo. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.

CWE(s)
CWE-120

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
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?

Buffer overflow in public-facing web endpoint (/goform/saveParentControlInfo) enables remote exploitation (T1190) leading to device crash/DoS via application exploitation (T1499.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-29361Same product: Tenda Rx3
CVE-2025-29363Same product: Tenda Rx3
CVE-2025-29362Same product: Tenda Rx3
CVE-2025-29358Same product: Tenda Rx3
CVE-2025-29360Same product: Tenda Rx3
CVE-2026-2185Same product: Tenda Rx3
CVE-2025-29357Same product: Tenda Rx3
CVE-2026-2187Same product: Tenda Rx3
CVE-2026-2180Same product: Tenda Rx3
CVE-2026-2186Same product: Tenda Rx3

Affected Assets

tenda
rx3 firmware
16.03.13.11_multi_tde01

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents buffer overflow by validating the deviceId parameter in /goform/saveParentControlInfo against crafted inputs.

SI-16 Memory Protection good match
prevent

Implements runtime memory protections like stack canaries and ASLR to block exploitation of the buffer overflow for DoS.

SI-2 Flaw Remediation good match
prevent

Requires timely remediation of the identified buffer overflow flaw through firmware patching or compensating controls.

References