Stored cross-site scripting (XSS) in the embedded webserver of AKCP sensorProbe before SP480-20210624 enables remote authenticated attacker…

published 2021-06-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22590

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.2%; EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits: 1; Exploit-DB

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.

Patch / fix

fixed in 5

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

Timeline

2021-06-30 Published
2021-07-02 First public exploit (EDB-50080)

Exploit prediction

3.23% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-50080 AKCP sensorProbe SPX476 - 'Multiple' Cross-Site Scripting (XSS) webapps, 2021-07-02
tbutler.org https://tbutler.org/2021/06/28/cve-2021-35956 referenced PoC, tagged "exploit" by a source, unverified
packetstormsecurity.com http://packetstormsecurity.com/files/163343/AKCP-sensorProbe-SPX476-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

tbutler.org /2021/06/28/cve-2021-35956
exploit, third-party-advisory
packetstormsecurity.com /files/163343/AKCP-sensorProbe-SPX476-Cross-Site-Scripting.html
exploit, third-party-advisory
akcp.com /support-center/customer-login/sensor-probe-firmware-changelog/
permissions-required, vendor-advisory
akcp.in.th /downloads/Firmwares/SP480-20210624.zip
product, vendor-advisory

Sources

CVE List CVE-2021-35956
NVD CVE-2021-35956

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary