CVE-2023-33009 is a critical buffer overflow vulnerability in the notification function of various Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG series firmware versions. This flaw allows an unauthenticated attacker to cause denial-of-service (DoS) and potentially achieve remote code execution on affected devices. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network without user interaction, leading to complete compromise of confidentiality, integrity, and availability. This CVE is actively exploited in the wild, as confirmed by its presence in the KEV catalog, and has garnered significant community attention and media coverage, despite a lack of public exploit intelligence tools.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.60, < 5.36CPE matchmatch criteria | cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:* | ||
5.36CPE matchmatch criteria | cpe:2.3:o:zyxel:atp100_firmware:5.36:-:*:*:*:*:*:* | ||
5.36CPE matchmatch criteria | cpe:2.3:o:zyxel:atp100_firmware:5.36:patch1:*:*:*:*:*:* | ||
>= 4.60, < 5.36CPE matchmatch criteria | cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:* | ||
5.36CPE matchmatch criteria | cpe:2.3:o:zyxel:atp200_firmware:5.36:-:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.