CVE-2021-35956

Name: CVE-2021-35956
Creator: NVD / NIST
Published: 2021-06-30T12:15:07.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 3.23%

Last modified Jun 17, 2026

CVE-2021-35956 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 3.23% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

3.23%

86.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Akcp	Sensorprobe2 Firmware	< sp480-20210624
Akcp	Sensorprobe4 Firmware	< sp480-20210624
Akcp	Sensorprobe8 Firmware	< sp480-20210624
Akcp	Sensorprobe8-X20 Firmware	< sp480-20210624
Akcp	Sensorprobe8-X60 Firmware	< sp480-20210624

References

http://packetstormsecurity.com/files/163343/AKCP-sensorProbe-SPX476-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://www.akcp.in.th/downloads/Firmwares/SP480-20210624.zipProduct, Vendor Advisory
https://tbutler.org/2021/06/28/cve-2021-35956Exploit, Third Party Advisory
https://www.akcp.com/support-center/customer-login/sensor-probe-firmware-changelog/Permissions Required, Vendor Advisory
http://packetstormsecurity.com/files/163343/AKCP-sensorProbe-SPX476-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://www.akcp.in.th/downloads/Firmwares/SP480-20210624.zipProduct, Vendor Advisory
https://tbutler.org/2021/06/28/cve-2021-35956Exploit, Third Party Advisory
https://www.akcp.com/support-center/customer-login/sensor-probe-firmware-changelog/Permissions Required, Vendor Advisory

Timeline

Published: Jun 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35956?

How severe is CVE-2021-35956?

CVE-2021-35956 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 3.23% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35956?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-35956?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST