Executive Summary

Informations
Name CVE-2020-13365 First vendor Publication 2020-08-06
Vendor Cve Last vendor Modification 2022-02-09

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:C/I:C/A:C)
Cvss Base Score 9 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0, V5.20(ABAG.1)C0, and V5.21(ABAG.3)C0; NSA325 v2_V4.81(AALS.0)C0 and V4.81(AAAJ.1)C0; NSA310 4.22(AFK.0)C0 and 4.22(AFK.1)C0; NAS326 V5.21(AAZF.8)C0, V5.11(AAZF.4)C0, V5.11(AAZF.2)C0, and V5.11(AAZF.3)C0; NSA310S V4.75(AALH.2)C0; NSA320S V4.75(AANV.2)C0 and V4.75(AANV.1)C0; NSA221 V4.41(AFM.1)C0; and NAS540 V5.21(AATB.5)C0 and V5.21(AATB.3)C0.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13365

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 1
Os 1
Os 1

Sources (Detail)

Source Url
MISC https://www.zyxel.com/support/Zyxel-security-advisory-for-NAS-remote-access-v...
https://www.zyxel.com/us/en/support/security_advisories.shtml

Alert History

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Date Informations
2022-02-10 12:45:48
  • Multiple Updates
2021-08-05 01:36:57
  • Multiple Updates
2021-07-21 17:23:33
  • Multiple Updates
2020-08-12 00:22:53
  • Multiple Updates
2020-08-07 00:23:02
  • Multiple Updates
2020-08-06 21:23:16
  • First insertion