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Apexward Pulse

A vulnerability has been identified in SIMATIC IPC BX-21A (All versions < V31.01.13), SIMATIC IPC RW-543A (All versions < V1.1.4), SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327…

CVE-2026-72895

What this means

This is rated high severity (8.4 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.

Full vendor description

A vulnerability has been identified in SIMATIC IPC BX-21A (All versions < V31.01.13), SIMATIC IPC RW-543A (All versions < V1.1.4), SIMATIC IPC227G / IPC277G / IPC277G PRO / IPC327G / IPC377G (All versions < V28.01.15). A BIOS vendor test key is present in the UEFI Secure Boot key database. This could allow a local attacker with physical or administrative access to the device to boot an operating system or UEFI application signed with that test key, bypassing UEFI Secure Boot protections even when Secure Boot is enabled, potentially leading to a full loss of confidentiality, integrity, and availability of the device.

Scoring and exploitation

8.4/ 10
CVSS 4.0 base scoreHigh

Exploitable only with local access without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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

Exploitability

Longer bar: easier to attack

Attack vectorLocalAV:L
Attack complexityLowAC:L
Attack requirementsNoneAT:N
Privileges requiredNonePR:N
User interactionActiveUI:A

Impact

Longer bar: more harm

ConfidentialityHighVC:H
IntegrityHighVI:H
AvailabilityHighVA:H
~0.1% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
Exploited in the wild
Not confirmed in the
Not reported

Weaknesses

CWE-1394

References

1 link from the CVE record, grouped by site.

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