#VU51383 Information disclosure in ZXHN H196Q - CVE-2021-21725

Vulnerability identifier: #VU51383

Vulnerability risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-21725

CWE-ID: CWE-200

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
ZXHN H196Q
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: ZTE

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote authenticated attacker on the local network can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ZXHN H196Q: 9.1.0C2

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External links
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014624

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.