VDB-180205 · CVE-2021-21739 · GCVE-0-2021-21739

ZTE ZXCTN 5.10.00B24 Optical improper authentication

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in ZTE ZXCTN 5.10.00B24. This vulnerability affects unknown code of the component Optical Module Handler. This manipulation causes improper authentication. This vulnerability is registered as CVE-2021-21739. No exploit is available.

Detailsinfo

A vulnerability was found in ZTE ZXCTN 5.10.00B24. It has been declared as critical. Affected by this vulnerability is an unknown code of the component Optical Module Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 08/06/2021. The advisory is shared at support.zte.com.cn. This vulnerability is known as CVE-2021-21739. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

ZXCTN

Version

5.10.00B24

License

commercial

Website

Vendor: https://www.zte.com.cn/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
08/06/2021 +213 days 🔍
08/06/2021 +0 days 🔍
08/10/2021 +4 days 🔍

Sourcesinfo

Vendor: zte.com.cn

Advisory: support.zte.com.cn
Status: Confirmed

CVE: CVE-2021-21739 (🔍)
GCVE (CVE): GCVE-0-2021-21739
GCVE (VulDB): GCVE-100-180205

Entryinfo

Created: 08/06/2021 08:10
Updated: 08/10/2021 08:41
Changes: 08/06/2021 08:10 (36), 08/10/2021 08:41 (2)
Complete: 🔍
Cache ID: 216::103