CVE-2026-55144
Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-55144- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-325
- Updated
- 2026-11-02
EUVDEUVD-2026-44034
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.
- Record
EUVD-2026-44034- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4r8r-cjr4-hvqr
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform...
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.
- Record
GHSA-4r8r-cjr4-hvqr- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-325
- Updated
- 2026-11-02
NVD
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-55144- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-325
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-55144 is a high vulnerability (CVSS 7.1) in Microsoft Windows 11 Version 24h2, published July 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 13th percentile. No source names a fixed version.