---
title: "CVE-2026-81944: PLANET IGS-5225-8P2T4S - Buffer Overflow"
description: "PLANET IGS-5225-8P2T4S industrial managed switch V1 and V2 firmware before 1.2412b260707 and 2.2412b260519 contain a stack-based buffer overflow caused by insufficient bounds checking in the web server, letting remote authenticated attackers cause denial of service or execute arbitrary code."
url: https://panop.io/threat-heartbeat/CVE-2026-81944/
---

# CVE-2026-81944 PLANET IGS-5225-8P2T4S - Buffer Overflow

PLANET IGS-5225-8P2T4S industrial managed switch V1 and V2 firmware before 1.2412b260707 and 2.2412b260519 contain a stack-based buffer overflow caused by insufficient bounds checking in the web server, letting remote authenticated attackers cause denial of service or execute arbitrary code.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.71% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-81944)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution, Denial Of Service

CVSS vector

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

Published

18 September 2026

Updated

15 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to firmware versions 1.2412b260707, 2.2412b260519 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-81944](https://nvd.nist.gov/vuln/detail/CVE-2026-81944)
- [https://www.vulncheck.com/advisories/planet-igs-5225-8p2t4s-v1-v2-stack-based-buffer-overflow-via-web-server](https://www.vulncheck.com/advisories/planet-igs-5225-8p2t4s-v1-v2-stack-based-buffer-overflow-via-web-server)
- [https://www.planet.com.tw/en/support/security-advisory/11](https://www.planet.com.tw/en/support/security-advisory/11)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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