What is CVE-2026-3422?

CVE-2026-3422 is a critical-severity vulnerability in Edetw U-Office Force, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-03-02.

How severe is CVE-2026-3422?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Edetw U-Office Force

CVE-2026-3422

U-Office Force developed by e-Excellence has a Insecure Deserialization vulnerability, allowing unauthenticated remote attackers to execute arbitrary code on the server by sending maliciously crafted serialized content.

Vulnerability class: Insecure Deserialization

Published 2026-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% 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: 0.009 · change: +0.002

Affected products

Edetw U-Office Force — versions 29.50
E-Excellence U-Office Force — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.twcert.org.tw/tw/cp-132-10742-45b13-1.html (Third Party Advisory, third-party-advisory)
www.twcert.org.tw/en/cp-139-10743-9a952-2.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-3422?: CVE-2026-3422 is a critical-severity vulnerability in Edetw U-Office Force, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-03-02.
How severe is CVE-2026-3422?: Critical severity. CVSS v3 base score is 9.8 out of 10.