Description
A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.36 Patch 2, USG FLEX series firmware versions 4.50 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 4.16 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 4.16 through 5.36 Patch 2, VPN series firmware versions 4.30 through 5.36 Patch 2, NXC2500 firmware versions 6.10(AAIG.0) through 6.10(AAIG.3), and NXC5500 firmware versions 6.10(AAOS.0) through 6.10(AAOS.4), could allow an unauthenticated, LAN-based attacker to cause denial of service (DoS) conditions by sending a crafted request to the CAPWAP daemon.
References (1)
Core 1
Core References
Scores
CVSS v3
6.5
EPSS
0.0011
EPSS Percentile
28.8%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-120
Status
published
Products (24)
zyxel/nxc2500_firmware
6.10\(aaig.0\) - 6.10\(aaig.3\)
zyxel/nxc5500_firmware
6.10\(aaos.0\) - 6.10\(aaos.4\)
zyxel/usg_20w-vpn_firmware
4.16 - 5.37
zyxel/usg_2200-vpn_firmware
4.30 - 5.37
zyxel/usg_flex_100_firmware
4.50 - 5.37
zyxel/usg_flex_100w_firmware
4.50 - 5.37
zyxel/usg_flex_200_firmware
4.50 - 5.37
zyxel/usg_flex_500_firmware
4.50 - 5.37
zyxel/usg_flex_50_firmware
4.50 - 5.37
zyxel/usg_flex_50w_firmware
4.50 - 5.37
... and 14 more
Published
Jul 17, 2023
Tracked Since
Feb 18, 2026