Honeywell MPA2 Web Application XSS vulnerability

published 2024-02-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24043

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Honeywell MPA2 Access Panel (Web server modules) allows XSS Using Invalid Characters.This issue affects MPA2 Access Panel all version prior to R1.00.08.05.

Honeywell released firmware update package MPA2 firmware R1.00.08.05 which addresses this vulnerability. This version and all later versions correct the reported vulnerability.

Patch / fix

fixed in 2

Honeywell MPA2 Access Panel R1.00.08.05
honeywell mpa2_access_panel R1.00.08.05

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-03-11)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected products

Honeywell MPA2 Access Panel
honeywell mpa2_access_panel

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

buildings.honeywell.com /us/en/brands/our-brands/security/support-and-resources/product-resources/eol-and-security-notices
vendor-advisory
https //www.honeywell.com/us/en/product-security
vendor-advisory

Sources

CVE List CVE-2023-1841
NVD CVE-2023-1841

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