Local data exposure and tampering via omitted cryptography
Published Jul 14, 2026 · Updated Jul 14, 2026
Missing cryptographic step in Windows CryptoAPI on affected Windows releases allows local users to tamper with protected data. Microsoft has not disclosed which CryptoAPI operation omits the required cryptographic step or how attacker-controlled input reaches it. Low-privileged local access is required; successful exploitation permits reading and modifying protected data without interrupting service.
Summary
What happened
Missing cryptographic step in Windows CryptoAPI on affected Windows releases allows local users to tamper with protected data. Microsoft has not disclosed which CryptoAPI operation omits the required cryptographic step or how attacker-controlled input reaches it. Low-privileged local access is required; successful exploitation permits reading and modifying protected data without interrupting service.
The record
- CVE
- CVE-2026-55144
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-325, CAPEC-68
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.33158
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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