Medium severity · published Jul 12, 2026
CVE-2026-15487
TRENDnet TEW-821DAP Firmware Update system_ntp sub_41FBD0 os command injection
6.3
CVSS
1.8%
EPSS
No
On KEV
Description
A vulnerability was found in TRENDnet TEW-821DAP 1.11B03. This impacts the function sub_41FBD0 of the file /goform/system_ntp of the component Firmware Update Handler. Performing a manipulation of the argument Hostname results in os command injection. The attack may be initiated 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
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15487
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15487
github.com
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI5.md
vuldb.com
https://vuldb.com/cve/CVE-2026-15487
vuldb.com
https://vuldb.com/submit/842385
vuldb.com
https://vuldb.com/vuln/377794
vuldb.com
https://vuldb.com/vuln/377794/cti
More from TEW-821DAP
10.0
CVE-2026-77946
TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow
8.8
CVE-2026-15484
TRENDnet TEW-821DAP ssi tools_nslookup sub_41EC14 buffer overflow
8.8
CVE-2026-15483
TRENDnet TEW-821DAP ssi tools_nslookup sub_41EC14 buffer overflow
8.8
CVE-2026-7609
TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection
8.8
CVE-2026-7607
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow