CVE-2023-33011: zyxel atp series firmware
Vulnerability summary
CVE-2023-33011 is a high (CVSS 8.8) vulnerability in zyxel atp series firmware. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.9% of scored vulnerabilities.
Timeline
- 17-07-2023PublishedVulnerability first disclosed.
- 07-11-2024Last modifiedVulnerability information updated.
Description
A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted PPPoE configuration on an affected device when the cloud management mode is enabled.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
26%
Versus all other CVEs
30-day change
0.00 pp
From 0.34% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zyxel27 products
- atp series firmware5.10 through 5.36 Patch 2
- usg_20w-vpn_firmware≥ 5.10, < 5.37
- usg_2200-vpn_firmware≥ 5.00, < 5.37
- usg_flex_100_firmware≥ 5.00, < 5.37
- usg_flex_100w_firmware≥ 5.00, < 5.37
1 vendor · 27 products
References
1 links- www.zyxel.com/global/…Vendor Advisory