Cyber Resilience

CVE-2025-29031

CriticalPublic PoC

Published: 14 March 2025

Published
14 March 2025
Modified
19 March 2025
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0014 33.6th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-29031 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Tenda Ac6 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 33.6th 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-2025-29031 is a buffer overflow vulnerability (CWE-787) affecting Tenda AC6 router firmware version v15.03.05.16, specifically in the fromAddressNat function. Published on 2025-03-14T14:15:18.430, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impact.

The vulnerability enables remote exploitation over the network with low complexity, requiring no authentication privileges or user interaction. Attackers can achieve high confidentiality, integrity, and availability impacts, potentially resulting in arbitrary code execution or complete device compromise.

Mitigation details are available in the referenced advisory at https://github.com/WhereisDoujo/CVE/issues/5.

EU & UK References

Vulnerability details

Tenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the fromAddressNat function.

CWE(s)
CWE-787

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 →
Why these techniques?

Unauthenticated buffer overflow in the router's web management interface (/goform/addressNat) via user-controlled parameters enables exploitation of a public-facing application, potentially leading to remote code execution or denial of service.

CVEs Like This One

CVE-2025-29030Same product: Tenda Ac6
CVE-2025-29029Same product: Tenda Ac6
CVE-2025-52221Same product: Tenda Ac6
CVE-2026-4961Same product: Tenda Ac6
CVE-2025-0349Same product: Tenda Ac6
CVE-2025-1814Same product: Tenda Ac6
CVE-2026-4960Same product: Tenda Ac6
CVE-2025-12225Same product: Tenda Ac6
CVE-2024-46450Same product: Tenda Ac6
CVE-2025-32010Same product: Tenda Ac6

Affected Assets

tenda
ac6 firmware
15.03.05.16

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Information input validation directly prevents the buffer overflow in the fromAddressNat function by enforcing bounds checking on network inputs.

SI-16 Memory Protection good match
prevent

Memory protection safeguards like non-executable memory and address space randomization mitigate exploitation of the buffer overflow for arbitrary code execution.

SI-2 Flaw Remediation good match
prevent

Flaw remediation ensures timely patching of the vulnerable Tenda AC6 v15.03.05.16 firmware to eliminate the buffer overflow vulnerability.

References