CVE-2022-40220Public exploitNetwork attack vector

Authenticated command execution via unchecked NVRAM restore values

Published Jan 26, 2023 · Updated Mar 28, 2025

OS command injection in Siretta QUARTZ-GOLD G5.0.1.5-210720-141020 allows remote authenticated users to execute arbitrary commands via HTTP. The wi_restore_custom handler splits uploaded lines into NVRAM keys and values, interpolates both into an nvram set shell command, and calls system() without validation. Valid administrative HTTP credentials and a transaction identifier are required; successful injection runs commands as root and the restore path reboots the router.

CVSS severity8.8
High
EPSS probability4.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Siretta QUARTZ-GOLD G5.0.1.5-210720-141020 allows remote authenticated users to execute arbitrary commands via HTTP. The wi_restore_custom handler splits uploaded lines into NVRAM keys and values, interpolates both into an nvram set shell command, and calls system() without validation. Valid administrative HTTP credentials and a transaction identifier are required; successful injection runs commands as root and the restore path reboots the router.

The record

CVE
CVE-2022-40220
Published
Jan 26, 2023
Updated
Mar 28, 2025
Vendor
Siretta
Product
QUARTZ-GOLD
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 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=G5.0.1.5-210720-141020

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Siretta · QUARTZ-GOLDversion=G5.0.1.5-210720-141020

Published CVSS scores

7.2Cisco TalosCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

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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