What is CVE-2026-81942?

CVE-2026-81942 is a high-severity vulnerability in Planet Technology Corp. Igs-5225-8p2t4s V1, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-09-18.

How severe is CVE-2026-81942?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Planet Technology Corp. Igs-5225-8p2t4s V1

CVE-2026-81942

PLANET IGS-5225-8P2T4S industrial managed switch V1 and V2 firmware versions before 1.2412b260707 and 2.2412b260519 contain an OS command injection vulnerability in the web server. User-supplied input is passed to system() without sufficient filtering, allowing a remote authenticated attacker to execute arbitrary commands on the underlying operating system and escalate privileges to root.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-09-18 · last modified 2026-09-22.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.6th percentile), scored 2026-11-02.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.planet.com.tw/en/support/security-advisory/11 (vendor-advisory, patch)
www.vulncheck.com/advisories/planet-igs-5225-8p2t4s-v1-v2-os-command-injection-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-81942?: CVE-2026-81942 is a high-severity vulnerability in Planet Technology Corp. Igs-5225-8p2t4s V1, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-09-18.
How severe is CVE-2026-81942?: High severity. CVSS v3 base score is 8.8 out of 10.