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5.9

Honeywell IQ MultiAccess: Malicious File Download Risk

CVE-2026-13742 · published 4 months ago
Summary

Honeywell IQ MultiAccess software versions prior to 28 are vulnerable to a security issue that could allow an attacker to replace a legitimate file with a malicious one. This could potentially harm your system or data. To fix this, update to the latest version of IQ MultiAccess, specifically version 28 Service Pack 1 or later.

Original advisory text
Honeywell IQ MultiAccess, all versions prior to and including version 28, contain an improper digital signature verification vulnerability. An attacker could potentially exploit this vulnerability,...
Honeywell IQ MultiAccess, all versions prior to and including version 28, contain an improper digital signature verification vulnerability. An attacker could potentially exploit this vulnerability, leading to the replacement of downloaded file with a malicious one. Honeywell also recommends updating to the most recent version of this product, service, or offering [V27 SP1, V28 SP1]
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
5.9 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
Timeline
Published29 Jun 2026
Updated26 Oct 2026
First seen29 Jun 2026
Sources
CVE-2026-13742 · NVD
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