CVE-2022-43393

8.2 HIGH 0.6% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 0.6% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-01-11 02:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 05:06 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.6% in the next 30 days (EPSS).
Severity: 8.2 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-01-11 02:15 UTC
Last modified: 2026-06-17 05:06 UTC
Exploit probability: 0.6% · EPSS, next 30 days
Weakness: CWE-754
Record status: Modified

Affected

Zyxel gs1350-6hp Firmware < 4.70\(abpi.5\)c0
Zyxel gs1350-12hp Firmware < 4.70\(abpj.5\)c0
Zyxel gs1350-18hp Firmware < 4.70\(abpk.5\)c0
Zyxel gs1350-26hp Firmware < 4.70\(abpl.5\)c0
Zyxel gs1915-8 Firmware < 4.70\(acap.3\)c0
Zyxel gs1915-8ep Firmware < 4.70\(acaq.3\)c0
Zyxel gs1915-24e Firmware < 4.70\(acdr.3\)c0
Zyxel gs1915-24ep Firmware < 4.70\(acds.3\)c0

Attack profile CVSS 3.1 · 8.2

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-43393.md and follow it. Check whether this project is affected by CVE-2022-43393. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record