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CVE-2022-26531

Status Candidate

Overview

Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.

Related Files

Zyxel zysh Format String Proof Of Concept
Posted Feb 9, 2024
Authored by Marco Ivaldi

Proof of concept format string exploit for Zyxel zysh. Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.

tags | exploit, overflow, local, proof of concept
advisories | CVE-2022-26531
SHA-256 | 274400da6832cf3ae8c1a6277041c603d352c6bf51a08f409168fc36a69f146c
Zyxel Buffer Overflow / Format String / Command Injection
Posted Jun 19, 2022
Authored by Marco Ivaldi | Site security.humanativaspa.it

Zyxel firewalls, AP controllers, and APs suffer from buffer overflow, format string, and command injection vulnerabilities.

tags | exploit, overflow, vulnerability
advisories | CVE-2022-26531, CVE-2022-26532
SHA-256 | 79406602a0c385dac42a7bfb84e9d7b7c26a7d4a46efafc40a5870b2cd7836d2
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