Security Resilience

CVE-2026-72895

Published
13 October 2026
Modified
15 October 2026
CVSS Score v4 8.4
Click a component to see what it means
Raw vectorCVSS: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
EPSS Score 0.0014 3th percentile
Risk Priority 55 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-72895 is a high-severity Use of Default Cryptographic Key (CWE-1394) vulnerability. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked at the 3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to CM-6 (Configuration Settings) and SC-12 (Cryptographic Key Establishment and Management) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-1394

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1014 Rootkit Stealth
Adversaries may use rootkits to hide the presence of programs, files, network connections, services, drivers, and other system components.
attack.mitre.org →
T1016 System Network Configuration Discovery Discovery
Adversaries may look for details about the network configuration and settings, such as IP and/or MAC addresses, of systems they access or through information discovery of remote systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-54887Shared CWE-1394
CVE-2025-1688Shared CWE-1394
CVE-2026-75870Shared CWE-1394
CVE-2024-11619Shared CWE-1394
CVE-2026-25815Shared CWE-1394
CVE-2024-48956Shared CWE-1394
CVE-2020-37281Shared CWE-1394
CVE-2024-29037Shared CWE-1394
CVE-2025-26849Shared CWE-1394
CVE-2026-107177Shared CWE-1394

Affected Assets

—
All
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

CM-6 Configuration Settings partial match

Requiring the most restrictive configuration settings prohibits the use of known default cryptographic keys.

SC-12 Cryptographic Key Establishment and Management partial match

Cryptographic key establishment and management requires generating and provisioning unique keys rather than relying on manufacturer defaults.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 partial match
blocks

Credential/key management practices eliminate default cryptographic keys for identities and services.

PR.AA-03 partial match
blocks

Strong authentication requirements implicitly disallow default keys but do not address key management itself.

PR.PS-01 partial match
blocks

Configuration management directly prohibits default keys via hardened baselines and change control.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.31 Legal, statutory, regulatory and contractual requirements partial match
removes
A.8.19 Installation of software on operational systems partial match
blocks

A.8.19 governs the process, authorization, testing and approval of software installation/updates on operational systems but contains no requirement to replace, avoid or configure away a default cryptographic key that is already present in the installed software.

A.8.24 Use of cryptography partial match
blocks

A.8.24 requires determining and applying appropriate cryptography per policy and classification; it does not stop a default key from being present or from being exploitable when one is used

A.8.26 Application security requirements partial match
removes
A.8.28 Secure coding partial match
removes
A.8.32 Change management partial match
blocks

Change-management processes should detect and remediate default cryptographic keys.

References