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Vulnerability · Published Apr 24, 2023 · Assigned by Zyxel

CVE-2023-22918

Medium 6.5

In plain English

A medium-severity security flaw in ATP series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.8%top 44.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Zyxel ATP series firmware 4.32 through 5.35
Zyxel USG FLEX series firmware 4.50 through 5.35
Zyxel USG FLEX 50(W) firmware 4.16 through 5.35
Zyxel USG20(W)-VPN firmware 4.16 through 5.35
Zyxel VPN series firmware 4.30 through 5.35
Zyxel NWA110AX firmware <= 6.50(ABTG.2)
Zyxel WAC500 firmware <= 6.50(ABVS.0)
Zyxel WAX510D firmware <= 6.50(ABTF.2)

Weakness: CWE-359 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References