CVE-2023-27521Network attack vector

Authenticated OS command execution via mail settings

Published May 23, 2023 · Updated Jan 31, 2025

OS command injection in CONTEC SolarView Compact models before 8.10 allows remote authenticated users to execute arbitrary OS commands. The mail settings page fails to validate HTTP request data before using it in an operating-system command, allowing injected syntax to change what the system executes. Access to an authenticated web session is required; successful exploitation permits data theft or modification and destruction of the monitoring system.

CVSS severity8.8
High
EPSS probability1.91%
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 CONTEC SolarView Compact models before 8.10 allows remote authenticated users to execute arbitrary OS commands. The mail settings page fails to validate HTTP request data before using it in an operating-system command, allowing injected syntax to change what the system executes. Access to an authenticated web session is required; successful exploitation permits data theft or modification and destruction of the monitoring system.

The record

CVE
CVE-2023-27521
Published
May 23, 2023
Updated
Jan 31, 2025
Vendor
CONTEC Co., Ltd.
Product
SolarView Compact
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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=SV-CPT-MC310 versions prior to Ver.8.10, and SV-CPT-MC310F versions prior to Ver.8.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CONTEC Co., Ltd. · SolarView Compactversion=SV-CPT-MC310 versions prior to Ver.8.10, and SV-CPT-MC310F versions prior to Ver.8.10

Published CVSS scores

8.8CONTEC Co., Ltd.CVSS:3.1/AV:N/AC:L/PR:L/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
8.8JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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