Buffer overflow in Trendnet Tew-821dap
CVE-2026-15483
A security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function sub_41EC14 of the file /goform/tools_nslookup of the component ssi. The manipulation of the argument nslookup_target leads to buffer overflow. It is possible to initiate the attack 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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Trendnet Tew-821dap — versions 1.12B01
Weakness classification (CWE)
References
- vuldb.com/vuln/377790 (technical-description, vdb-entry)
- vuldb.com/vuln/377790/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15483 (third-party-advisory)
- vuldb.com/submit/842380 (third-party-advisory)
- github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO2.md (patch)
Frequently asked questions
- What is CVE-2026-15483?
- CVE-2026-15483 is a high-severity vulnerability in Trendnet Tew-821dap, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-07-12.
- How severe is CVE-2026-15483?
- High severity. CVSS v3 base score is 8.8 out of 10.