CVE-2020-13365
8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD
Description
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.
Affected (4)
Products: Zyxel: Nas326 Firmware, Nas520 Firmware, Nas540 Firmware, Nas542 Firmware
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before v5.21\(aazf.9\)c0 |
| Running on/with | Platform Versions |
|---|---|
Zyxel Nas326 | All versions |
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Before v5.21\(aasz.5\)c0 |
| Running on/with | Platform Versions |
|---|---|
Zyxel Nas520 | All versions |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| Before v5.21\(aatb.6\)c0 |
| Running on/with | Platform Versions |
|---|---|
Zyxel Nas540 | All versions |
Configuration D
| Vulnerable Software | Affected Versions |
|---|---|
| Before v5.21\(abag.6\)c0 |
| Running on/with | Platform Versions |
|---|---|
Zyxel Nas542 | All versions |
References (4)
Source: cve@mitre.org
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Timeline
No history available yet.