CVE-2025-15356

Name: CVE-2025-15356
Creator: NVD / NIST
Published: 2025-12-30T21:15:43.477+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 3.45%

Last modified Jun 17, 2026

CVE-2025-15356 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. EPSS estimates a 3.45% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

3.45%

87.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tenda	Ac20 Firmware	<= 16.03.08.12

References

https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC20_Buffer_Overflow/Tenda%20AC20_Buffer_Overflow.md#pocExploit, Third Party Advisory
https://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_OverflowExploit, Third Party Advisory
https://vuldb.com/?ctiid.338742Permissions Required, VDB Entry
https://vuldb.com/?id.338742Third Party Advisory, VDB Entry
https://vuldb.com/?submit.726360Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product

Timeline

Published: Dec 30, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-15356?

How severe is CVE-2025-15356?

CVE-2025-15356 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 3.45% probability of exploitation in the next 30 days.

How do I fix CVE-2025-15356?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-15356?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST