High severity · published Sep 3, 2024
CVE-2024-42057
A command injection vulnerability in the IPSec VPN feature of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through…
8.1
CVSS
1.3%
EPSS
No
On KEV
Description
A command injection vulnerability in the IPSec VPN feature of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG FLEX 50(W) series firmware versions from V4.16 through V5.38, and USG20(W)-VPN series firmware versions from V4.16 through V5.38 could allow an unauthenticated attacker to execute some OS commands on an affected device by sending a crafted username to the vulnerable device. Note that this attack could be successful only if the device was configured in User-Based-PSK authentication mode and a valid user with a long username exceeding 28 characters exists.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
ATP series firmware · Zyxel
versions V4.32 through V5.38 · source: vendor
UF
USG FLEX 50(W) series firmware · Zyxel
versions V4.16 through V5.38 · source: vendor
UF
USG FLEX series firmware · Zyxel
versions V4.50 through V5.38 · source: vendor
US
USG20(W)-VPN series firmware · Zyxel
versions V4.16 through V5.38 · source: vendor
ZL
Zld · Zyxel
4.32 before 5.39; 4.50 before 5.39; 4.16 before 5.39; 4.16 before 5.39 · source: NVD
AF
Atp800 Firmware · Zyxel
4.32 through 5.38 · source: CISA
UF
Usg Flex 50w Firmware · Zyxel
4.16 through 5.38 · source: CISA
UF
Usg Flex 700h Firmware · Zyxel
4.5 through 5.38 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-42057
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-42057
Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-09-03-2024
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