What is the CVSS score of CVE-2021-30174?

CVE-2021-30174 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.6%.

Cloudiso CVE-2021-30174

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2021-05-11 twcert@cert.org.tw

XSS Cloudiso

5.4

CVSS 3.1 · Vendor: cert

Severity by source

Vendor (cert) PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (cert) · only source for this CVE.

CVSS VectorVendor: cert

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

May 11, 2021 - 06:15 cve.org

MEDIUM 5.4

DescriptionCVE.org

RiyaLab CloudISO event item is added, special characters in specific field of time management page are not properly filtered, which allow remote authenticated attackers can inject malicious JavaScript and carry out stored XSS (Stored Cross-site scripting) attacks.

AnalysisAI

RiyaLab CloudISO event item is added, special characters in specific field of time management page are not properly filtered, which allow remote authenticated attackers can inject malicious. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. RiyaLab CloudISO event item is added, special characters in specific field of time management page are not properly filtered, which allow remote authenticated attackers can inject malicious JavaScript and carry out stored XSS (Stored Cross-site scripting) attacks. Affected products include: Ruiyanai Cloudiso.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.