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Medium severity · published Jul 12, 2026
CVE-2026-15486
TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injection
6.3
CVSS
1.8%
EPSS
No
On KEV
Description
A vulnerability has been found in TRENDnet TEW-821DAP 1.11B03. This affects the function sub_42026C of the file /goform/tools_ddns of the component Firmware Update Handler. Such manipulation of the argument hostname/username/password leads to os command injection. The attack can be launched remotely. The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. " This vulnerability only affects products that are no longer supported by the maintainer.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
TEW-821DAP · TRENDnet
1.11B03 · source: vendor
Affected product
TE
TEW-821DAP
TRENDnet
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15486
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15486
github.com
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.md
vuldb.com
https://vuldb.com/cve/CVE-2026-15486
vuldb.com
https://vuldb.com/submit/842383
vuldb.com
https://vuldb.com/vuln/377793
vuldb.com
https://vuldb.com/vuln/377793/cti
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