What is the CVSS score of CVE-2021-35956?

CVE-2021-35956 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: 3.2%.

Is there a public PoC exploit available for CVE-2021-35956?

Yes, a public proof-of-concept exploit is available for CVE-2021-35956. Prioritise patching immediately. EPSS: 3.2%.

Sensorprobe2 Firmware CVE-2021-35956

MEDIUM

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

2021-06-30 cve@mitre.org

XSS Sensorprobe2 Firmware Sensorprobe4 Firmware Sensorprobe8 Firmware Sensorprobe8 X20 Firmware Sensorprobe8 X60 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

Jun 30, 2021 - 12:15 nvd

MEDIUM 5.4

DescriptionNVD

Stored cross-site scripting (XSS) in the embedded webserver of AKCP sensorProbe before SP480-20210624 enables remote authenticated attackers to introduce arbitrary JavaScript via the Sensor Description, Email (from/to/cc), System Name, and System Location fields.

AnalysisAI

Stored cross-site scripting (XSS) in the embedded webserver of AKCP sensorProbe before SP480-20210624 enables remote authenticated attackers to introduce arbitrary JavaScript via the Sensor. 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. Stored cross-site scripting (XSS) in the embedded webserver of AKCP sensorProbe before SP480-20210624 enables remote authenticated attackers to introduce arbitrary JavaScript via the Sensor Description, Email (from/to/cc), System Name, and System Location fields. Affected products include: Akcp Sensorprobe2 Firmware, Akcp Sensorprobe4 Firmware, Akcp Sensorprobe8 Firmware, Akcp Sensorprobe8-X20 Firmware, Akcp Sensorprobe8-X60 Firmware.

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.