CVE-2020-13364

CWE-269 — Improper Privilege Management3 documents3 sources
Severity
8.8HIGH
EPSS
0.2%
top 53.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Zyxel Nas326 FirmwareZyxel Nas520 FirmwareZyxel Nas540 Firmware+1 more
Timeline
PublishedAug 6
Latest updateMay 24

Description

A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. 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 …

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages4 packages

▶NVDzyxel/nas326_firmware< v5.21\(aazf.9\)c0
▶NVDzyxel/nas520_firmware< v5.21\(aasz.5\)c0
▶NVDzyxel/nas540_firmware< v5.21\(aatb.6\)c0
▶NVDzyxel/nas542_firmware< v5.21\(abag.6\)c0

🔴Vulnerability Details

2
GHSA
GHSA-cwv4-27xg-6829: A backdoor in certain Zyxel products allows remote TELNET access via a CGI script↗2022-05-24
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CVEList
CVE-2020-13364: A backdoor in certain Zyxel products allows remote TELNET access via a CGI script↗2020-08-06
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CVE-2020-13364 (HIGH CVSS 8.8) | A backdoor in certain Zyxel product | cvebase.io