Cyber Resilience

CVE-2021-35956

MediumPublic PoC

Published: 30 June 2021

Published
30 June 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0098 77.2th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-35956 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Akcp Sensorprobe2 Firmware. Its CVSS base score is 5.4 (Medium).

Operationally, ranked in the top 22.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

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

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References