What is the CVSS score of CVE-2021-40517?

CVE-2021-40517 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: 0.5%.

Is there a public PoC exploit available for CVE-2021-40517?

Yes, a public proof-of-concept exploit is available for CVE-2021-40517. Prioritise patching immediately. EPSS: 0.5%.

Hsmx App 25 Firmware CVE-2021-40517

MEDIUM

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

2021-11-10 cve@mitre.org

XSS Hsmx App 25 Firmware Hsmx App 100 Firmware Hsmx App 1000 Firmware Hsmx App 5000 Firmware Hsmx App 20000 Firmware

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/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: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

Nov 10, 2021 - 17:15 nvd

MEDIUM 5.4

DescriptionNVD

Airangel HSMX Gateway devices through 5.2.04 is vulnerable to stored Cross Site Scripting. XSS Payload is placed in the name column of the updates table using database access.

AnalysisAI

Airangel HSMX Gateway devices through 5.2.04 is vulnerable to stored Cross Site Scripting. Rated medium severity (CVSS 5.4), 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. Airangel HSMX Gateway devices through 5.2.04 is vulnerable to stored Cross Site Scripting. XSS Payload is placed in the name column of the updates table using database access. Affected products include: Airangel Hsmx-App-25 Firmware, Airangel Hsmx-App-100 Firmware, Airangel Hsmx-App-1000 Firmware, Airangel Hsmx-App-5000 Firmware, Airangel Hsmx-App-20000 Firmware. Version information: through 5.2.04.

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.