CVE-2022-45853

Root command execution via SSH shell escape

Published May 30, 2023 · Updated Jan 10, 2025

Privilege escalation in Zyxel GS1900-8 and GS1900-8HP firmware 2.70 Patch 3 allows local users to execute commands as root via SSH. The SSH interface permits an administrator to escape its restricted shell into a root shell; Zyxel has not published the faulty code path. Administrator credentials and enabled SSH access are required, and SSH is disabled by default.

CVSS severity6.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Zyxel GS1900-8 and GS1900-8HP firmware 2.70 Patch 3 allows local users to execute commands as root via SSH. The SSH interface permits an administrator to escape its restricted shell into a root shell; Zyxel has not published the faulty code path. Administrator credentials and enabled SSH access are required, and SSH is disabled by default.

The record

CVE
CVE-2022-45853
Published
May 30, 2023
Updated
Jan 10, 2025
Vendor
Zyxel Networks
Product
GS1900-8 Firmware
Classifications
CWE-276, CWE-269, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V2.70(AAHH.3)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Zyxel Networks · GS1900-8 Firmwareversion=V2.70(AAHH.3)
Zyxel Networks · GS1900-8HP Firmwareversion=V2.70(AAHI.3)

Published CVSS scores

6.7Zyxel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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