CVE-2025-29828 (GCVE-0-2025-29828)

Vulnerability from cvelistv5 – Published: 2025-06-10 17:02 – Updated: 2026-02-26 17:50
VLAI KEVintel KEV
Title
Windows Schannel Remote Code Execution Vulnerability
Summary
Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 11 version 22H2 Affected: 10.0.22621.0 , < 10.0.22621.5472 (custom)
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Microsoft Windows 11 version 22H3 Affected: 10.0.22631.0 , < 10.0.22631.5472 (custom)
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Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.5472 (custom)
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Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.4349 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.3807 (custom)
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Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.1665 (custom)
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Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.4349 (custom)
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Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.4349 (custom)
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Date Public
2025-06-10 07:00
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1b59f8b5-49ee-4881-bb0a-71e72a965dc3

Vulnerability ID: CVE-2025-29828

Status: Confirmed

Status Updated: 2025-06-11 07:01 UTC

Exploited: Yes

Timestamps
First Seen: 2025-06-11
Asserted: 2025-06-11
Scope
Notes: KEVIntel entry: Windows Schannel Remote Code Execution Vulnerability | Affected: Microsoft / Windows 11 version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows Server 2022, Windows Server 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2025 (Server Core installation) | CVSS: 8.1 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Windows Schannel Remote Code Execution Vulnerability
Vendor Microsoft
Product Windows 11 version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows Server 2022, Windows Server 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2025 (Server Core installation)
Added Date 2025-06-11T07:01:39.000Z
Cvss Score 8.1
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:46 UTC | Updated: 2026-06-19 12:46 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.