CVE-2023-32956Network attack vector

Unauthenticated code execution via CGI command injection

Published May 16, 2023 · Updated Jan 22, 2025

OS command injection in the CGI component of Synology Router Manager before 1.2.5-8227-6 and 1.3.1-9346-3 allows remote attackers to execute code. The CGI component passes attacker-controlled input into an operating-system command without adequate neutralization, but Synology has not disclosed the affected endpoint, parameter, or command construction. Network access without authentication or user interaction is sufficient; the undisclosed vector prevents narrower exposure triage.

CVSS severity9.8
Critical
EPSS probability1.53%
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 the CGI component of Synology Router Manager before 1.2.5-8227-6 and 1.3.1-9346-3 allows remote attackers to execute code. The CGI component passes attacker-controlled input into an operating-system command without adequate neutralization, but Synology has not disclosed the affected endpoint, parameter, or command construction. Network access without authentication or user interaction is sufficient; the undisclosed vector prevents narrower exposure triage.

The record

CVE
CVE-2023-32956
Published
May 16, 2023
Updated
Jan 22, 2025
Vendor
Synology
Product
Synology Router Manager (SRM)
Classifications
T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 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=1.2 <1.2.5-8227-6
  2. Affected versionversion=1.3 <1.3.1-9346-3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Synology · Synology Router Manager (SRM)version=1.2 <1.2.5-8227-6; version=1.3 <1.3.1-9346-3

Published CVSS scores

9.8SynologyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

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

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 exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

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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