CVE-2022-48121Public exploitNetwork attack vector

Remote command execution via unfiltered rsabits input

Published Jan 20, 2023 · Updated Apr 3, 2025

OS command injection in TOTOlink A7100RU 7.4cu.2313_B20191024 allows remote attackers to execute commands through the rsabits parameter. The delStaticDhcpRules handler passes rsabits through Uci_Set_Str and cstesystem to execv without neutralizing shell metacharacters such as command substitution. Requests reach cstecgi.cgi over the router's management interface, and successful exploitation runs injected commands with the service's privileges.

CVSS severity9.8
Critical
EPSS probability1.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in TOTOlink A7100RU 7.4cu.2313_B20191024 allows remote attackers to execute commands through the rsabits parameter. The delStaticDhcpRules handler passes rsabits through Uci_Set_Str and cstesystem to execv without neutralizing shell metacharacters such as command substitution. Requests reach cstecgi.cgi over the router's management interface, and successful exploitation runs injected commands with the service's privileges.

The record

CVE
CVE-2022-48121
Published
Jan 20, 2023
Updated
Apr 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS 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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo