Vulnerability Report

CVE-2026-2191

Title: Stack-based buffer overflow in Tenda AC9 formGetDdosDefenceList

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2026-2191.

CWE Category CWE-119
Published Date Feb 08, 2026
Modified Date Feb 10, 2026
Exploit Status Not Found
Score 7.3 CVSS v4.0
Exploit Probability (EPSS)
0.14%

Vulnerability Summary

CVE-2026-2191: A weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Impacted Vendors

T
tenda 1
T
tendacn 1

Reference Links

https://github.com/glkfc/IoT-Vulnerability/blob/main/Tenda/tenda3.md https://vuldb.com/?ctiid.344894 https://vuldb.com/?id.344894 https://vuldb.com/?submit.749800 https://www.tenda.com.cn/
CVSS v4.0
Source Entity [email protected]
Severity HIGH
7.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
N/A
RAW VECTOR CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.2
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
8.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:M/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-2191 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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

Affected Stack

No specific products linked.