CVE-2022-43393

An improper check for unusual or exceptional conditions in the HTTP request processing function...

8.2 High

An improper check for unusual or exceptional conditions in the HTTP request processing function of Zyxel GS1920-24v2 firmware prior to V4.70(ABMH.8)C0, which could allow an unauthenticated attacker to corrupt the contents of the memory and result in a denial-of-service (DoS) condition on a vulnerable device.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: High

Exploit likelihood

0.58%Down 0.3 points since Jan 11, 2023

What each source reports

CVE List Score used 8.2

Record: CVE-2022-43393
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness: CWE-754
Updated: 2026-11-02

EUVDEUVD-2022-46432 8.2

Record: EUVD-2022-46432
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-36hf-3x3x-vfch 8.2

An improper check for unusual or exceptional conditions in the HTTP request processing function...

Record: GHSA-36hf-3x3x-vfch
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness: CWE-754
Updated: 2026-11-02

NVD 8.2

Record: CVE-2022-43393
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness: CWE-754
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-43393 is a high vulnerability (CVSS 8.2) in Zyxel Gs1920-24v2 Firmware, published January 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 48th percentile. No source names a fixed version.