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.
CVSS breakdown
CVSS 3.1
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Zyxel / ATP series firmware4.32 through 5.36 Patch 2 – 4.32 through 5.36 Patch 2
- Zyxel / NXC2500 firmware6.10(AAIG.0) through 6.10(AAIG.3) – 6.10(AAIG.0) through 6.10(AAIG.3)
- Zyxel / NXC5500 firmware6.10(AAOS.0) through 6.10(AAOS.4) – 6.10(AAOS.0) through 6.10(AAOS.4)
- Zyxel / USG20(W)-VPN series firmware4.16 through 5.36 Patch 2 – 4.16 through 5.36 Patch 2
- Zyxel / USG FLEX 50(W) series firmware4.16 through 5.36 Patch 2 – 4.16 through 5.36 Patch 2
- Zyxel / USG FLEX series firmware4.50 through 5.36 Patch 2 – 4.50 through 5.36 Patch 2
- Zyxel / VPN series firmware4.30 through 5.36 Patch 2 – 4.30 through 5.36 Patch 2