CVE-2023-22918: zyxel atp series firmware
Vulnerability summary
CVE-2023-22918 is a medium (CVSS 6.5) vulnerability in zyxel atp series firmware. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.9% of scored vulnerabilities.
Timeline
- 24-04-2023PublishedVulnerability first disclosed.
- 12-02-2025Last modifiedVulnerability information updated.
Description
A post-authentication information exposure vulnerability in the CGI program of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, VPN series firmware versions 4.30 through 5.35, NWA110AX firmware version 6.50(ABTG.2) and earlier versions, WAC500 firmware version 6.50(ABVS.0) and earlier versions, and WAX510D firmware version 6.50(ABTF.2) and earlier versions, which could allow a remote authenticated attacker to retrieve encrypted information of the administrator on an affected device.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.77%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.77% 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
Zyxel59 products
- atp series firmware4.32 through 5.35
- atp100_firmware≥ 4.32, < 5.36
- atp100w_firmware≥ 4.32, < 5.36
- atp200_firmware≥ 4.32, < 5.36
- atp500_firmware≥ 4.32, < 5.36
1 vendor · 59 products