CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Jun 21, 2023
Description
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.
EPSS — Exploit Probability
94.3%
Higher than 100.0% of all CVEs
Required Action
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-28771
Risk Assessment
HIGHIn CISA KEV
High EPSS
Details
- Severity
- High
- EPSS
- 94.3%
- CISA KEV
- Yes
- Ransomware
- Unknown
- Articles
- 0
Timeline
Published
May 31, 2023
Added to KEV
May 31, 2023
Remediation Due
Jun 21, 2023