CVE-2025-29808

Local information disclosure via risky cryptography

Published Apr 8, 2025 · Updated Aug 10, 2026

Risky cryptography in Windows Server 2022 Cryptographic Services before build 10.0.20348.3453 allows local users to disclose information. Microsoft has not disclosed the cryptographic primitive, code locus, input, or incorrect operation that produces the disclosure. Low-privileged local access is required, and the published impact is limited to reading otherwise protected information.

CVSS severity5.5
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Risky cryptography in Windows Server 2022 Cryptographic Services before build 10.0.20348.3453 allows local users to disclose information. Microsoft has not disclosed the cryptographic primitive, code locus, input, or incorrect operation that produces the disclosure. Low-privileged local access is required, and the published impact is limited to reading otherwise protected information.

The record

CVE
CVE-2025-29808
Published
Apr 8, 2025
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Windows Server 2022
Classifications
CWE-1240
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.20348.0 <10.0.20348.3453

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.3453

Published CVSS scores

5.5Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1240Use of a Cryptographic Primitive with a Risky Implementation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo