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Vulnerabilities

Vulnerability · CVE-2026-107441

Zyxel gs1900-10hp_firmware Out-of-bounds Write

Published Nov 3, 2026 · catalog updated Nov 4, 2026 · Zyxel GS1900 Series Switches

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Patch now

CVE-2026-107441 is in the CISA known-exploited catalog. Confirm Zyxel GS1900 Series Switches against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.

Same product and reporting

Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.29%
Remediation
Remediation guidance
Affected products
vendor Zyxel GS1900 Series Switches · vendor Zyxel GS1900-10HP firmware · vendor Zyxel GS1900-16 firmware · vendor Zyxel GS1900-24 firmware · vendor Zyxel GS1900-24E firmware · vendor Zyxel GS1900-24EP firmware

Serial number: AV26-1114 Date: November 3, 2026 Updated: November 4, 2026 As of November 3, 2026, Zyxel is affected by vulnerabilities in the following products: Zyxel GS1900 series switches Multiple versions and models Zyxel APs, FWA7, and Security Routers Multiple versions and models Update 1 Open-source reporting indicates that CVE-2026-107441 is exploited in the wild. The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. Zyxel security advisory for out-of-bounds write vulnerability in GS1900 series sw

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Zyxel GS1900 Series Switchesversion unspecified
  • vendor Zyxel GS1900-10HP firmwareversion unspecified
  • vendor Zyxel GS1900-16 firmwareversion unspecified
  • vendor Zyxel GS1900-24 firmwareversion unspecified
  • vendor Zyxel GS1900-24E firmwareversion unspecified
  • vendor Zyxel GS1900-24EP firmwareversion unspecified
  • vendor Zyxel GS1900-8 firmwareversion unspecified
  • vendor Zyxel GS1900-8HP firmwareversion unspecified
  • vendor Zyxel GS1900-HPv2 firmwareversion unspecified

How to fix CVE-2026-107441

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-107441 is in the CISA known-exploited catalog. Confirm Zyxel GS1900 Series Switches against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.29%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Related records

Linked stories and findings that share CVE identifiers or explicit correlation edges.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 3, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  2. Nov 3, 2026 · OpenCVE

    Detected

    CVE-2026-107441 is named on the public OpenCVE page.

  3. Nov 4, 2026 · CVE.org

    Updated

    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.

Sources

  • Canadian Centre for Cyber SecurityGovernment advisoryCVE-2026-107441

    Serial number: AV26-1114 Date: November 3, 2026 Updated: November 4, 2026 As of November 3, 2026, Zyxel is affected by vulnerabilities in the following products: Zyxel GS1900 series switches Multiple versions and models Zyxel APs, FWA7, and Security Routers Multiple versions and

    cyber.gc.ca
  • CVE.orgVulnerability recordCVE-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 unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-107441

    30-day exploitation probability 0.29%

    first.org
  • OpenCVEVendor advisoryCVE-2026-107441

    CVE-2026-107441 is named on the public OpenCVE page.

    opencve.io
  • Tenable CVE DatabaseVulnerability recordCVE-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 unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

    tenable.com
  • VulnCheck KEVConfirmed exploitationCVE-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 unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

    vulncheck.com

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Canadian Centre for Cyber SecurityNov 7, 2026
  • FIRST EPSSNov 6, 2026
  • VulnCheck KEVNov 6, 2026
  • CVE.orgNov 4, 2026
  • Tenable CVE DatabaseNov 3, 2026
  • OpenCVENov 3, 2026