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NVD Vulnerability Details :
CVE-2026-1637
Analyzed
More InfoOfficial Page
Source-cna@vuldb.com
View Known Exploited Vulnerability (KEV) details
Published At-29 Jan, 2026 | 23:16
Updated At-10 Feb, 2026 | 15:13

A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function fromAdvSetMacMtuWan of the file /goform/AdvSetMacMtuWan. The manipulation leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.4HIGH
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
Secondary3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary2.09.0HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C
Type: Secondary
Version: 4.0
Base score: 7.4
Base severity: HIGH
Vector:
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
Type: Secondary
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 2.0
Base score: 9.0
Base severity: HIGH
Vector:
AV:N/AC:L/Au:S/C:C/I:C/A:C
CPE Matches
Tenda Technology Co., Ltd.
tenda
>>ac21_firmware>>16.03.08.16
cpe:2.3:o:tenda:ac21_firmware:16.03.08.16:*:*:*:*:*:*:*
Tenda Technology Co., Ltd.
tenda
>>ac21>>-
cpe:2.3:h:tenda:ac21:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-119Secondarycna@vuldb.com
CWE-121Secondarycna@vuldb.com
CWE ID: CWE-119
Type: Secondary
Source: cna@vuldb.com
CWE ID: CWE-121
Type: Secondary
Source: cna@vuldb.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/LX-LX88/cve/issues/25cna@vuldb.com
Broken Link
https://vuldb.com/?ctiid.343416cna@vuldb.com
Permissions Required
VDB Entry
https://vuldb.com/?id.343416cna@vuldb.com
Third Party Advisory
VDB Entry
https://vuldb.com/?submit.740865cna@vuldb.com
Third Party Advisory
VDB Entry
https://www.tenda.com.cn/cna@vuldb.com
Product
https://github.com/LX-LX88/cve/issues/25134c704f-9b21-4f2e-91b3-4a467353bcc0
Broken Link
Hyperlink: https://github.com/LX-LX88/cve/issues/25
Source: cna@vuldb.com
Resource:
Broken Link
Hyperlink: https://vuldb.com/?ctiid.343416
Source: cna@vuldb.com
Resource:
Permissions Required
VDB Entry
Hyperlink: https://vuldb.com/?id.343416
Source: cna@vuldb.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://vuldb.com/?submit.740865
Source: cna@vuldb.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://www.tenda.com.cn/
Source: cna@vuldb.com
Resource:
Product
Hyperlink: https://github.com/LX-LX88/cve/issues/25
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Broken Link
Change History
0Changes found
Details not found