Vulnerability · Published Mar 17, 2026 · Assigned by VulDB

CVE-2026-4354TRENDnet TEW-824DRU Web apply_sec.cgi sub_420A78 cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting in TEW-824DRU from TRENDnet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)2.5%top 15.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in TRENDnet TEW-824DRU 1.010B01/1.04B01. The impacted element is the function sub_420A78 of the file apply_sec.cgi of the component Web Interface. Such manipulation of the argument Language leads to cross site scripting. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
TRENDnet	TEW-824DRU	1.010B011.04B01

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-351381 | TRENDnet TEW-824DRU Web apply_sec.cgi sub_420A78 cross site scripting vdb-entry, technical-description
VDB-351381 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #772660 | TRENDnet TEW-824DRU v1.04B01 Denial of Service third-party-advisory
https://github.com/i-Corner/cve/issues/41 exploit, issue-tracking