Medium severity · published Apr 24, 2023
CVE-2023-22918
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…
6.5
CVSS
0.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Atp100 Firmware · Zyxel
4.32 before 5.36 · source: NVD
AF
Atp100w Firmware · Zyxel
4.32 before 5.36 · source: NVD
AF
Atp200 Firmware · Zyxel
4.32 before 5.36 · source: NVD
AF
Atp500 Firmware · Zyxel
4.32 before 5.36 · source: NVD
AF
Atp700 Firmware · Zyxel
4.32 before 5.36 · source: NVD
AF
Atp800 Firmware · Zyxel
4.32 before 5.36 · source: NVD
NF
Nap203 Firmware · Zyxel
through 6.28\(abfa.0\) · source: NVD
NF
Nap303 Firmware · Zyxel
through 6.28\(abex.0\) · source: NVD
NF
Nap353 Firmware · Zyxel
through 6.28\(abey.0\) · source: NVD
NF
Nwa110ax Firmware · Zyxel
through 6.50\(abtg.2\) · source: NVD
NH
Nwa1123-ac HD Firmware · Zyxel
through 6.25\(abin.9\) · source: NVD
NF
Nwa1123-ac-pro Firmware · Zyxel
through 6.28\(abhd.0\) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22918
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22918
Patch
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps
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