// For flags

CVE-2025-25199

BCryptGenerateSymmetricKey memory leak

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

go-crypto-winnative Go crypto backend for Windows using Cryptography API: Next Generation (CNG). Prior to commit f49c8e1379ea4b147d5bff1b3be5b0ff45792e41, calls to `cng.TLS1PRF` don't release the key handle, producing a small memory leak every time. Commit f49c8e1379ea4b147d5bff1b3be5b0ff45792e41 contains a fix for the issue. The fix is included in versions 1.23.6-2 and 1.22.12-2 of the Microsoft build of go, as well as in the pseudoversion 0.0.0-20250211154640-f49c8e1379ea of the `github.com/microsoft/go-crypto-winnative` Go package.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-02-03 CVE Reserved
  • 2025-02-12 CVE Published
  • 2025-02-12 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
Go-crypto-winnative
Search vendor "Microsoft" for product "Go-crypto-winnative"
< 1.23.6
Search vendor "Microsoft" for product "Go-crypto-winnative" and version " < 1.23.6"
en
Affected
Microsoft
Search vendor "Microsoft"
Go-crypto-winnative
Search vendor "Microsoft" for product "Go-crypto-winnative"
< 1.22.12
Search vendor "Microsoft" for product "Go-crypto-winnative" and version " < 1.22.12"
en
Affected
Microsoft
Search vendor "Microsoft"
Go-crypto-winnative
Search vendor "Microsoft" for product "Go-crypto-winnative"
< 0.0.0
Search vendor "Microsoft" for product "Go-crypto-winnative" and version " < 0.0.0"
en
Affected