CVE-2026-4254
CRITICALTenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-351212 | Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow
https://vuldb.com/?id.351212
Signature, Permissions Required signature
permissions-required
VDB-351212 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/?ctiid.351212
Third Party Advisory third-party-advisory
Submit #771773 | Tenda AC8 V5 V16.03.50.11 Buffer Overflow
https://vuldb.com/?submit.771773
Exploit exploit
https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md
Product product
https://www.tenda.com.cn/
Scores
CVSS v3
9.8
EPSS
0.0089
EPSS Percentile
54.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-119
CWE-787
CWE-121
Status
published
Products (13)
Tenda/AC8
16.03.50.0
Tenda/AC8
16.03.50.1
Tenda/AC8
16.03.50.10
Tenda/AC8
16.03.50.11
Tenda/AC8
16.03.50.2
Tenda/AC8
16.03.50.3
Tenda/AC8
16.03.50.4
Tenda/AC8
16.03.50.5
Tenda/AC8
16.03.50.6
Tenda/AC8
16.03.50.7
... and 3 more
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026