VulnerabilityModified
CVE-2021-21739
A ZTE's product of the transport network access layer has a security vulnerability.
MEDIUM 4.6EPSS 0.25%
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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>
- CVSS 3.1
- 4.6 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-345
- Affected
- zte/zxctn 6120h firmware
- Source
- psirt@zte.com.cn
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.