Security Resilience

CVE-2023-36906

Microsoft Windows 11 21H2 ≤ 10.0.22000.2295

Published
08 August 2023
Modified
10 August 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.020 80th percentile
Risk Priority 49 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-2023-36906 is a medium-severity Improper Null Termination (CWE-170) vulnerability in Microsoft Windows 11 21H2. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 20% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Windows Cryptographic Services Information Disclosure Vulnerability

CWE(s)
CWE-170NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
attack.mitre.org →
T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
attack.mitre.org →
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 →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-36907Same product: Microsoft Windows 10
CVE-2023-36583Same product: Microsoft Windows 10
CVE-2023-36909Same product: Microsoft Windows 10
CVE-2026-70587Same product: Microsoft Windows 10 1607
CVE-2023-21822Same product: Microsoft Windows 10
CVE-2023-23420Same product: Microsoft Windows 10
CVE-2023-23421Same product: Microsoft Windows 10
CVE-2023-35321Same product: Microsoft Windows Server 2008
CVE-2023-36593Same product: Microsoft Windows 10
CVE-2023-36582Same product: Microsoft Windows 10

Affected Assets

microsoft
windows 10
≤ 10.0.10240.20107
microsoft
windows 10 1607
≤ 10.0.14393.6167
microsoft
windows 10 1809
≤ 10.0.17763.4737
microsoft
windows 10 21h2
≤ 10.0.19044.3324
microsoft
windows 10 22h2
≤ 10.0.19045.3324
microsoft
windows 11 21h2
≤ 10.0.22000.2295 · ≤ 10.0.22000.2295
microsoft
windows 11 22h2
≤ 10.0.22621.2134 · ≤ 10.0.22621.2134
microsoft
windows server 2008
all versions, r2
microsoft
windows server 2012
all versions, r2
microsoft
windows server 2016
all versions
+2 more product configuration(s) — see NVD for full list

Mitigating Controls

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.PS-06 partial match
blocks

Secure SDLC practices directly enforce correct string/array termination via coding standards, reviews, and static analysis.

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.8.19 Installation of software on operational systems partial match
removes
A.8.25 Secure development life cycle partial match
blocks

A.8.25 mandates secure SDLC practices including secure coding guidelines, developer training, security testing and checkpoints that reach improper null termination as a coding defect, but leaves a bounded remainder (e.g. outsourced development without full assurance, inconsistent application of guidelines across languages or legacy code, and defects that slip past testing per the SA-3 vs CWE-89 precedent).

A.8.26 Application security requirements partial match
blocks

A.8.26 requires identifying and specifying security requirements (including resilience against SQL injection or buffer overflows) but does not itself implement any mechanism that stops null-termination errors from being introduced or exploited; the weakness can still be present and exploitable.

A.8.27 Secure system architecture and engineering principles partial match
removes

A.8.27 mandates establishing and applying secure engineering principles (including secure coding, hardening, and design review) but does not itself remove existing instances of null-termination defects already present in code; per the verb definition and anchors, testing finds while only direct code change removes, and this clause reaches neither first-party code defects nor the removal act

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require correct null termination of strings and arrays.

A.8.29 Security testing in development and acceptance partial match
finds

Security testing in development can detect missing or incorrect null terminators before release.

References