// For flags

CVE-2023-28771

Zyxel Multiple Firewalls OS Command Injection Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.

Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-03-23 CVE Reserved
  • 2023-04-25 CVE Published
  • 2023-05-23 First Exploit
  • 2023-05-31 Exploited in Wild
  • 2023-06-21 KEV Due Date
  • 2024-08-02 CVE Updated
  • 2024-11-15 EPSS Updated
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Zyxel
Search vendor "Zyxel"
Atp100 Firmware
Search vendor "Zyxel" for product "Atp100 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Atp100 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp100
Search vendor "Zyxel" for product "Atp100"
--
Safe
Zyxel
Search vendor "Zyxel"
Atp100w Firmware
Search vendor "Zyxel" for product "Atp100w Firmware"
>= 4.60 < 5.35
Search vendor "Zyxel" for product "Atp100w Firmware" and version " >= 4.60 < 5.35"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp100w
Search vendor "Zyxel" for product "Atp100w"
--
Safe
Zyxel
Search vendor "Zyxel"
Atp200 Firmware
Search vendor "Zyxel" for product "Atp200 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Atp200 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp200
Search vendor "Zyxel" for product "Atp200"
--
Safe
Zyxel
Search vendor "Zyxel"
Atp500 Firmware
Search vendor "Zyxel" for product "Atp500 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Atp500 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp500
Search vendor "Zyxel" for product "Atp500"
--
Safe
Zyxel
Search vendor "Zyxel"
Atp700 Firmware
Search vendor "Zyxel" for product "Atp700 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Atp700 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp700
Search vendor "Zyxel" for product "Atp700"
--
Safe
Zyxel
Search vendor "Zyxel"
Atp800 Firmware
Search vendor "Zyxel" for product "Atp800 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Atp800 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Atp800
Search vendor "Zyxel" for product "Atp800"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 100 Firmware
Search vendor "Zyxel" for product "Usg Flex 100 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 100 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 100
Search vendor "Zyxel" for product "Usg Flex 100"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 100w Firmware
Search vendor "Zyxel" for product "Usg Flex 100w Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 100w Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 100w
Search vendor "Zyxel" for product "Usg Flex 100w"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 200 Firmware
Search vendor "Zyxel" for product "Usg Flex 200 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 200 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 200
Search vendor "Zyxel" for product "Usg Flex 200"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 50 Firmware
Search vendor "Zyxel" for product "Usg Flex 50 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 50 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 50
Search vendor "Zyxel" for product "Usg Flex 50"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 500 Firmware
Search vendor "Zyxel" for product "Usg Flex 500 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 500 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 500
Search vendor "Zyxel" for product "Usg Flex 500"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 50w Firmware
Search vendor "Zyxel" for product "Usg Flex 50w Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 50w Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 50w
Search vendor "Zyxel" for product "Usg Flex 50w"
--
Safe
Zyxel
Search vendor "Zyxel"
Usg Flex 700 Firmware
Search vendor "Zyxel" for product "Usg Flex 700 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Usg Flex 700 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Usg Flex 700
Search vendor "Zyxel" for product "Usg Flex 700"
--
Safe
Zyxel
Search vendor "Zyxel"
Vpn100 Firmware
Search vendor "Zyxel" for product "Vpn100 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Vpn100 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Vpn100
Search vendor "Zyxel" for product "Vpn100"
--
Safe
Zyxel
Search vendor "Zyxel"
Vpn1000 Firmware
Search vendor "Zyxel" for product "Vpn1000 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Vpn1000 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Vpn1000
Search vendor "Zyxel" for product "Vpn1000"
--
Safe
Zyxel
Search vendor "Zyxel"
Vpn300 Firmware
Search vendor "Zyxel" for product "Vpn300 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Vpn300 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Vpn300
Search vendor "Zyxel" for product "Vpn300"
--
Safe
Zyxel
Search vendor "Zyxel"
Vpn50 Firmware
Search vendor "Zyxel" for product "Vpn50 Firmware"
>= 4.60 < 5.36
Search vendor "Zyxel" for product "Vpn50 Firmware" and version " >= 4.60 < 5.36"
-
Affected
in Zyxel
Search vendor "Zyxel"
Vpn50
Search vendor "Zyxel" for product "Vpn50"
--
Safe
Zyxel
Search vendor "Zyxel"
Zywall Usg 310 Firmware
Search vendor "Zyxel" for product "Zywall Usg 310 Firmware"
>= 4.60 < 4.73
Search vendor "Zyxel" for product "Zywall Usg 310 Firmware" and version " >= 4.60 < 4.73"
-
Affected
in Zyxel
Search vendor "Zyxel"
Zywall Usg 310
Search vendor "Zyxel" for product "Zywall Usg 310"
--
Safe
Zyxel
Search vendor "Zyxel"
Zywall Usg 310 Firmware
Search vendor "Zyxel" for product "Zywall Usg 310 Firmware"
4.73
Search vendor "Zyxel" for product "Zywall Usg 310 Firmware" and version "4.73"
-
Affected
in Zyxel
Search vendor "Zyxel"
Zywall Usg 310
Search vendor "Zyxel" for product "Zywall Usg 310"
--
Safe
Zyxel
Search vendor "Zyxel"
Zywall Usg 100 Firmware
Search vendor "Zyxel" for product "Zywall Usg 100 Firmware"
>= 4.60 < 4.73
Search vendor "Zyxel" for product "Zywall Usg 100 Firmware" and version " >= 4.60 < 4.73"
-
Affected
in Zyxel
Search vendor "Zyxel"
Zywall Usg 100
Search vendor "Zyxel" for product "Zywall Usg 100"
--
Safe
Zyxel
Search vendor "Zyxel"
Zywall Usg 100 Firmware
Search vendor "Zyxel" for product "Zywall Usg 100 Firmware"
4.73
Search vendor "Zyxel" for product "Zywall Usg 100 Firmware" and version "4.73"
-
Affected
in Zyxel
Search vendor "Zyxel"
Zywall Usg 100
Search vendor "Zyxel" for product "Zywall Usg 100"
--
Safe