CVE-2026-81942: Command Injection (CVSS 8.8)

Description

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0190

Probability of exploitation

0.79%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://www.planet.com.tw/en/support/security-advisory/11 https://www.vulncheck.com/advisories/planet-igs-5225-8p2t4s-v1-v2-os-command-injection-via-web-server

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-81942? +

CVE-2026-81942 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0190, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-81942? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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