CVE-2021-21739

CVSS V2 Low 2.1 CVSS V3 Medium 4.6
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>
Overview
  • CVE ID
  • CVE-2021-21739
  • Assigner
  • psirt@zte.com.cn
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-05T20:15:07
  • Last Modified Date
  • 2021-08-12T14:50:06
Weakness Enumerations
CWE URL
CWE-345 http://cwe.mitre.org/data/definitions/345.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:zte:zxctn_6120h_firmware:5.10.00b24:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zte:zxctn_6120h:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:P/A:N
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • PHYSICAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.6
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-21739
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21739
History
Created Old Value New Value Data Type Notes
2022-05-10 06:57:34 Added to TrackCVE
2022-12-05 07:27:51 2021-08-05T20:15Z 2021-08-05T20:15:07 CVE Published Date updated
2022-12-05 07:27:51 2021-08-12T14:50:06 CVE Modified Date updated
2022-12-05 07:27:51 Analyzed Vulnerability Status updated