Vulnerability Details : CVE-2021-21739
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>
Products affected by CVE-2021-21739
- cpe:2.3:o:zte:zxctn_6120h_firmware:5.10.00b24:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21739
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21739
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:P/A:N |
3.9
|
2.9
|
NIST | |
|
4.6
|
MEDIUM | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
0.9
|
3.6
|
NIST |
CWE ids for CVE-2021-21739
-
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-21739
-
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024
Security Bulletin DetailsVendor Advisory
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