What is CVE-2026-102131?

CVE-2026-102131 is a high-severity vulnerability in Kiteworks Email Protection Gateway, classified under Code Injection. CVSS score: 7.2/10. Published 2026-09-30.

How severe is CVE-2026-102131?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Kiteworks Email Protection Gateway

CVE-2026-102131

Kiteworks Email Protection Gateway rejected certain configuration settings, but its validation did not recognize every form in which they could be supplied. An authenticated administrator could potentially use an unrecognized form to have a file of their choosing written to the gateway and executed, resulting in code execution as the gateway service account.

Vulnerability class: RCE (Remote Code Execution)

Published 2026-09-30 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Kiteworks Email Protection Gateway

Weakness classification (CWE)

References

9119a7d8-5eab-497f-8521-727c672e3725 (vendor-advisory)
9119a7d8-5eab-497f-8521-727c672e3725 (third-party-advisory)

Frequently asked questions

What is CVE-2026-102131?: CVE-2026-102131 is a high-severity vulnerability in Kiteworks Email Protection Gateway, classified under Code Injection. CVSS score: 7.2/10. Published 2026-09-30.
How severe is CVE-2026-102131?: High severity. CVSS v3 base score is 7.2 out of 10.