Medium severity4.6NVD Advisory· Published Aug 5, 2021· Updated Jun 17, 2026
CVE-2021-21739
CVE-2021-21739
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: <V5.10.00B24>
AI Insight
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Affected products
3- Range: =V5.10.00B24
- ZTE/transport network access layerdescription
- cpe:2.3:o:zte:zxctn_6120h_firmware:5.10.00b24:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
1- support.zte.com.cn/support/news/LoopholeInfoDetail.aspxnvdVendor Advisory
News mentions
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