CVE-2021-21739
ZTE Transport Network Access Layer Authentication Bypass Vulnerability
Description
A ZTE's product of the transport network access layer has a security vulnerability. Because the system does not sufficiently verify the data reliability, attackers could replace an authenticated optical module on the equipment with an unauthenticated one, bypassing system authentication and detection, thus affecting signal transmission. This affects: <ZXCTN 6120H><V5.10.00B24>
INFO
Published Date :
Aug. 5, 2021, 8:15 p.m.
Last Modified :
Aug. 12, 2021, 2:50 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-21739.
| URL | Resource |
|---|---|
| https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21739 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21739 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Aug. 12, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024 No Types Assigned https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024 Vendor Advisory Added CWE NIST CWE-345 Added CPE Configuration AND OR *cpe:2.3:o:zte:zxctn_6120h_firmware:5.10.00b24:*:*:*:*:*:*:* OR cpe:2.3:h:zte:zxctn_6120h:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21739 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-21739
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.23685
percentile