What is CVE-2022-42496?

CVE-2022-42496 is a critical-severity vulnerability in Kujirahand Nadesiko3, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-12-05.

How severe is CVE-2022-42496?

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

RCE in Kujirahand Nadesiko3

CVE-2022-42496

OS command injection vulnerability in Nako3edit, editor component of nadesiko3 (PC Version) v3.3.74 and earlier allows a remote attacker to obtain appkey of the product and execute an arbitrary OS command on the product.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-12-05 · 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: 0.022 (81.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.022 · change: +0.001

Affected products

Kujirahand Nadesiko3
Kujirahand Nako3edit, Editor Component Of Nadesiko3 (Pc Version) — versions v3.3.74 and earlier

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/kujirahand/nadesiko3/issues/1325 (Patch, Third Party Advisory, Issue Tracking)
github.com/kujirahand/nadesiko3/issues/1347 (Third Party Advisory, Issue Tracking)
jvn.jp/en/jp/JVN56968681/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2022-42496?: CVE-2022-42496 is a critical-severity vulnerability in Kujirahand Nadesiko3, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-12-05.
How severe is CVE-2022-42496?: Critical severity. CVSS v3 base score is 9.8 out of 10.