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Sv Cpt Mc310 Firmware CVE-2023-27920

MEDIUM
Incorrect Authorization (CWE-863)
2023-05-23 vultures@jpcert.or.jp
4.3
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could bypass authorization checks to access restricted resources by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 1.8% exploitation probability (EPSS)

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AnalysisAI

Improper access control vulnerability in the system date/time setting page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10 and SV-CPT-MC310F versions prior to Ver.8.10 allows a remote. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. Improper access control vulnerability in the system date/time setting page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10 and SV-CPT-MC310F versions prior to Ver.8.10 allows a remote authenticated attacker to alter system date/time of the affected product. Affected products include: Contec Sv-Cpt-Mc310F Firmware, Contec Sv-Cpt-Mc310 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionNVD

Improper access control vulnerability in the system date/time setting page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10 and SV-CPT-MC310F versions prior to Ver.8.10 allows a remote authenticated attacker to alter system date/time of the affected product.

Threat Intelligence Overview

EPSS Score
1.8%
Top 24% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 1.8%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:contec:sv-cpt-mc310f_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:contec:sv-cpt-mc310_firmware:*:*:*:*:*:*:*:*
CVE-2014-2324 MEDIUM POC
5.0 Mar 14

Multiple directory traversal vulnerabilities in (1) mod_evhost and (2) mod_simple_vhost in lighttpd before 1.4.35 allow

CVE-2022-31374 CRITICAL POC
9.8 Jun 21

An arbitrary file upload vulnerability /images/background/1.php in of SolarView Compact 6.0 allows attackers to execute

CVE-2022-29303 CRITICAL POC
9.8 May 12

SolarView Compact ver.6.00 was discovered to contain a command injection vulnerability via conf_mail.php. Rated critical

CVE-2022-29298 HIGH POC
7.5 May 12

SolarView Compact ver.6.00 allows attackers to access sensitive files via directory traversal. Rated high severity (CVSS

CVE-2022-31373 MEDIUM POC
6.1 Jun 21

SolarView Compact v6.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the component Solar_AiCo

CVE-2021-20658 CRITICAL
9.8 Feb 24

SolarView Compact SV-CPT-MC310 prior to Ver.6.5 allows an attacker to execute arbitrary OS commands with the web server

CVE-2022-29302 MEDIUM POC
5.5 May 12

SolarView Compact ver.6.00 was discovered to contain a local file disclosure via /html/Solar_Ftp.php. Rated medium sever

CVE-2023-27521 HIGH
8.8 May 23

OS command injection vulnerability in the mail setting page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10

CVE-2023-27518 HIGH
8.8 May 23

Buffer overflow vulnerability in the multiple setting pages of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10

CVE-2023-27514 HIGH
8.8 May 23

OS command injection vulnerability in the download page of SolarView Compact SV-CPT-MC310 versions prior to Ver.8.10 and

CVE-2022-35239 HIGH
8.8 Aug 16

The image file management page of SolarView Compact SV-CPT-MC310 Ver.7.23 and earlier, and SV-CPT-MC310F Ver.7.23 and ea

CVE-2021-20659 HIGH
8.8 Feb 24

SolarView Compact SV-CPT-MC310 prior to Ver.6.5 allows an authenticated attacker to upload arbitrary files via unspecifi

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