FaceSentry Access Control System 6.4.8 Reflected Cross-Site Scripting via pluginInstall.php

published 2026-01-07 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-1607

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits: 0; none known

FaceSentry Access Control System 6.4.8 contains a cross-site scripting vulnerability in the 'msg' parameter of pluginInstall.php that allows attackers to inject malicious scripts. Attackers can exploit the unvalidated input to execute arbitrary JavaScript in victim browsers, potentially stealing authentication credentials and conducting phishing attacks.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 10 mo ago (2026-01-08)

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

zeroscience.mk https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5527.php referenced PoC, tagged "exploit" by a source, unverified
packetstormsecurity.com https://packetstormsecurity.com/files/153494 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

iWT Ltd. FaceSentry Access Control System

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

zeroscience.mk /en/vulnerabilities/ZSL-2019-5527.php
third-party-advisory, exploit
packetstormsecurity.com /files/153494
exploit, third-party-advisory
cxsecurity.com /issue/WLB-2019070017
third-party-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/163191
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-25277
NVD CVE-2019-25277

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