ZyXEL USG FLEX 50 CGI Program os command injection

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.9	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in ZyXEL USG FLEX 100, USG FLEX 200, USG FLEX 500, USG FLEX 700, USG FLEX 20 and USG FLEX 50. This affects an unknown function of the component CGI Program Handler. The manipulation results in os command injection. This vulnerability is identified as CVE-2022-30525. The attack can be executed remotely. Additionally, an exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical has been found in ZyXEL USG FLEX 100, USG FLEX 200, USG FLEX 500, USG FLEX 700, USG FLEX 20 and USG FLEX 50. Affected is an unknown functionality of the component CGI Program Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 05/13/2022. The advisory is available at zyxel.com. This vulnerability is traded as CVE-2022-30525 since 05/10/2022. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

The exploit is shared for download at packetstormsecurity.com. It is declared as attacked. This issue was added on 05/16/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/06/2022:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Exploit-DB (50946). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

ZyXEL

Name

License

commercial

Website

Vendor: https://www.zyxel.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Zyxel Corporation): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/10/2022 🔍
05/13/2022 +3 days 🔍
05/13/2022 +0 days 🔍
03/13/2025 +1035 days 🔍

Sourcesinfo

Vendor: zyxel.com

Advisory: zyxel.com
Status: Confirmed

CVE: CVE-2022-30525 (🔍)
GCVE (CVE): GCVE-0-2022-30525
GCVE (VulDB): GCVE-100-199746
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/13/2022 09:03
Updated: 03/13/2025 19:14
Changes: 05/13/2022 09:03 (47), 05/15/2022 13:51 (1), 04/26/2024 06:42 (26), 06/22/2024 16:27 (2), 07/30/2024 19:23 (1), 09/22/2024 11:27 (1), 03/13/2025 19:14 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.