CVE-2026-4254

HIGH EPSS 54.7%
Published Mar 16, 20263mo ago · Modified Jun 17, 20262w ago
8.9 CVSS 4.0
High
Find Similar
Published Mar 16, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

CVSS Details

Base Score
8.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
54.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 3

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-121
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 2

VendorProductVersionRange
tendaac8_firmware* ≤16.03.50.11
tendaac85.0any

References 5

  • github.com https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md
    ExploitThird Party Advisory
  • vuldb.com https://vuldb.com/?ctiid.351212
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.351212
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.771773
    Third Party AdvisoryVDB Entry
  • tenda.com.cn https://www.tenda.com.cn/
    Product

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.