What is the CVSS score of CVE-2021-28000?

CVE-2021-28000 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.9%.

Is there a public PoC exploit available for CVE-2021-28000?

Yes, a public proof-of-concept exploit is available for CVE-2021-28000. Prioritise patching immediately. EPSS: 0.9%.

Local Services Search Engine Management System CVE-2021-28000

MEDIUM

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

2021-08-19 cve@mitre.org

RCE XSS Local Services Search Engine Management System

4.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.8 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Aug 19, 2021 - 14:39 nvd

MEDIUM 4.8

DescriptionNVD

AnalysisAI

A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management System Project 1.0 which allows remote attackers to execute arbitrary code via crafted. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and 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. A persistent cross-site scripting vulnerability was discovered in Local Services Search Engine Management System Project 1.0 which allows remote attackers to execute arbitrary code via crafted payloads entered into the Name and Address fields. Affected products include: Local Services Search Engine Management System Project Local Services Search Engine Management System.

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.