CVE-2022-26531

MEDIUM

Zyxel USG/ZyWALL series <4.71 - Info Disclosure

Title source: llm
STIX 2.1

Description

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.

References (4)

Core 4

Scores

CVSS v3 6.1
EPSS 0.0099
EPSS Percentile 77.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Details

CWE
CWE-20
Status published
Products (38)
zyxel/atp100_firmware 4.32 - 5.21
zyxel/atp100w_firmware 4.32 - 5.21
zyxel/atp200_firmware 4.32 - 5.21
zyxel/atp500_firmware 4.32 - 5.21
zyxel/atp700_firmware 4.32 - 5.21
zyxel/atp800_firmware 4.32 - 5.21
zyxel/nap203_firmware < 6.25\(abfa.7\)
zyxel/nap303_firmware < 6.25\(abex.7\)
zyxel/nap353_firmware < 6.25\(abey.7\)
zyxel/nsg100_firmware 1.33 (5 CPE variants)
... and 28 more
Published May 24, 2022
Tracked Since Feb 18, 2026