CVE-2021-35029
An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.25% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- zyxel/usg1900 firmware · zyxel/usg1100 firmware · zyxel/usg310 firmware · zyxel/usg210 firmware · zyxel/usg110 firmware · zyxel/usg40 firmware · zyxel/usg40w firmware · zyxel/usg60 firmware · zyxel/usg60w firmware · zyxel/usg300 firmware · zyxel/usg1000 firmware · zyxel/usg2000 firmware · zyxel/usg20 firmware · zyxel/usg20w firmware · zyxel/usg50 firmware · zyxel/usg100 firmware · zyxel/usg200 firmware · zyxel/usg flex 100 firmware · zyxel/usg flex 200 firmware · zyxel/usg flex 500 firmware · +17 more
- Source
- security@zyxel.com.tw
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.