CVE-2023-25395Public exploitNetwork attack vector

Remote command execution via unsanitized ou parameter

Published Mar 8, 2023 · Updated Aug 2, 2024

OS command injection in TOTOlink A7100RU firmware 7.4cu.2313_B20191024 allows remote attackers to execute commands through the ou parameter. The delStaticDhcpRules handler passes ou through Uci_Set_Str into an snprintf-built command that cstesystem ultimately supplies to execv without neutralizing shell syntax. The published request includes a SESSION_ID cookie, but public evidence does not establish whether authentication is required; successful injection can yield a root shell.

CVSS severity9.8
Critical
EPSS probability1.92%
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 TOTOlink A7100RU firmware 7.4cu.2313_B20191024 allows remote attackers to execute commands through the ou parameter. The delStaticDhcpRules handler passes ou through Uci_Set_Str into an snprintf-built command that cstesystem ultimately supplies to execv without neutralizing shell syntax. The published request includes a SESSION_ID cookie, but public evidence does not establish whether authentication is required; successful injection can yield a root shell.

The record

CVE
CVE-2023-25395
Published
Mar 8, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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

9.8NIST NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1059Command and Scripting Interpreter

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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