Honeywell IQ MultiAccess Update Service 27 / 28 Privilege Escalation

Honeywell IQ MultiAccess Update Service suffers from a local privilege escalation vulnerability. Due to a named pipe configured with a NULL DACL a low-privileged user can use the pipe to communicate with the IQUpdSrv service running as SYSTEM. When providing specific data over the pipe, arbitrary...

CVE-2026-13742

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...

CVE-2026-13742

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...

CVE-2026-13742 Lack of signature verification before execution of downloaded content

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...

EUVD-2026-40126

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...

CVE-2026-13742: Time-of-check Time-of-use (TOCTOU) Race Condition

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...

PT-2026-53308

Name of the Vulnerable Software and Affected Versions Honeywell IQ MultiAccess versions prior to and including 28 Description Improper digital signature verification allows an attacker to replace a downloaded file with a malicious one. Recommendations Update to version 27 SP1 or 28 SP1...