What is CVE-2026-76591?

CVE-2026-76591 is a high-severity vulnerability in Trendnet Tew-755ap, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2026-08-19.

How severe is CVE-2026-76591?

High severity. CVSS v3 base score is 7.4 out of 10.

RCE in Trendnet Tew-755ap

CVE-2026-76591

A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

Affected products

Trendnet Tew-755ap — versions 20260702

Weakness classification (CWE)

References

cna@vuldb.com (exploit)
cna@vuldb.com (related)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-76591?: CVE-2026-76591 is a high-severity vulnerability in Trendnet Tew-755ap, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2026-08-19.
How severe is CVE-2026-76591?: High severity. CVSS v3 base score is 7.4 out of 10.