🛡️ CVE-2022-26531
🟡 CVSS 6.1 — Medium ✅ No Known Exploit CWE-20 NVD
6.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CWE CWE-20
Public Exploit ✅ No
Source NVD
Published 2022-05-24
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
atp100-firmware 4.32 5.21
atp100w-firmware 4.32 5.21
atp200-firmware 4.32 5.21
atp500-firmware 4.32 5.21
atp700-firmware 4.32 5.21
atp800-firmware 4.32 5.21
nap203-firmware — 6.25\(abfa.7\)
nap303-firmware — 6.25\(abex.7\)
nap353-firmware — 6.25\(abey.7\)
nsg100-firmware — —
nsg300-firmware — —
nsg50-firmware — —
nwa110ax-firmware — 6.30\(abtg.2\)
nwa1123-ac-hd-firmware — 6.25\(abin.6\)
nwa1123-ac-pro-firmware — 6.25\(abhd.7\)
nwa1123acv3-firmware — 6.30\(abvt.2\)
nwa1302-ac-firmware — 6.25\(abku.6\)
nwa210ax-firmware — 6.30\(abtd.2\)
nwa50ax-firmware — 6.25\(abyw.5\)
nwa5123-ac-hd-firmware — 6.25\(abim.6\)
nwa55axe-firmware — 6.25\(abzl.5\)
nwa90ax-firmware — 6.27\(accv.2\)
nxc2500-firmware — 6.10\(aaig.3\)
nxc5500-firmware — 6.10\(aaos.3\)
usg-110-firmware 4.09 4.71
usg-1100-firmware 4.09 4.71
usg-1900-firmware 4.09 4.71
usg-20w-firmware 4.09 4.71
usg-20w-vpn-firmware 4.09 4.71
usg-2200-vpn-firmware 4.09 4.71
usg-310-firmware 4.09 4.71
usg-40-firmware 4.09 4.71
usg-40w-firmware 4.09 4.71
usg-60-firmware 4.09 4.71
usg-60w-firmware 4.09 4.71
usg-flex-100-firmware 4.50 5.21
usg-flex-100w-firmware 4.50 5.21
usg-flex-200-firmware 4.50 5.21
usg-flex-500-firmware 4.50 5.21
usg-flex-700-firmware 4.50 5.21
usg20-firmware 4.09 4.71
usg200-firmware 4.09 4.71
usg210-firmware 4.09 4.71
usg2200-firmware 4.09 4.71
usg300-firmware 4.09 4.71
usg310-firmware 4.09 4.71
vpn100-firmware 4.30 5.21
vpn1000-firmware 4.30 5.21
vpn300-firmware 4.30 5.21
vpn50-firmware 4.30 5.21
wac500-firmware — 6.30\(abvs.2\)
wac500h-firmware — 6.30\(abwa.2\)
wac5302d-s-firmware — 6.10\(abfh.10\)
wac5302d-sv2-firmware — 6.25\(abvz.6\)
wac6103d-i-firmware — 6.25\(aaxh.7\)
wac6303d-s-firmware — 6.25\(abgl.6\)
wac6502d-e-firmware — 6.25\(aasd.7\)
wac6502d-s-firmware — 6.25\(aase.7\)
wac6503d-s-firmware — 6.25\(aasf.7\)
wac6552d-s-firmware — 6.25\(abio.7\)
wac6553d-s-firmware — 6.25\(aasg.7\)
wax510d-firmware — 6.30\(abtf.2\)
wax610d-firmware — 6.30\(abte.2\)
wax630s-firmware — 6.30\(abzd.2\)
wax650s-firmware — 6.30\(abrm.2\)

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