CVE-2025-8939

HIGH EPSS 52.2%
Published Aug 14, 202510mo ago · Modified Jun 17, 20262w ago
7.4 CVSS 4.0
High
Find Similar
Published Aug 14, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

Description

A vulnerability was determined in Tenda AC20 up to 16.03.08.12. Affected is an unknown function of the file /goform/WifiGuestSet. The manipulation of the argument shareSpeed leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

CVSS Details

Base Score
7.4
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
52.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-120

Affected Products 2

VendorProductVersionRange
tendaac20_firmware*≥16.03.08.0  –  ≤16.03.08.12
tendaac20*any

References 6

  • github.com https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md
    ExploitThird Party Advisory
  • github.com https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20/Tenda%20AC20.md#3-poc
    ExploitThird Party Advisory
  • vuldb.com https://vuldb.com/?ctiid.319902
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.319902
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.631829
    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.