CVE-2025-25199
BCryptGenerateSymmetricKey memory leak
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
BCryptGenerateSymmetricKey memory leak
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.
- Record
CVE-2025-25199- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
EUVDEUVD-2025-4085
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.
- Record
EUVD-2025-4085- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-29c6-3hcj-89cf
go-crypto-winnative BCryptGenerateSymmetricKey memory leak
Calls to cng.TLS1PRF don't release the key handle, producing a small memory leak every time.
- Record
GHSA-29c6-3hcj-89cf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-25199- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSV
BCryptGenerateSymmetricKey memory leak
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.
- Record
CVE-2025-25199- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSVGHSA-29c6-3hcj-89cf
go-crypto-winnative BCryptGenerateSymmetricKey memory leak
Calls to cng.TLS1PRF don't release the key handle, producing a small memory leak every time.
- Record
GHSA-29c6-3hcj-89cf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
Show 4 moreShow less
OSVAZL-79122No score
CVE-2025-25199 affecting package golang 1.25.7-1
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.
- Record
AZL-79122- Updated
- 2026-11-02
OSVAZL-98937No score
CVE-2025-25199 affecting package golang 1.27.1-1
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.
- Record
AZL-98937- Updated
- 2026-11-02
OSVGO-2025-3461No score
go-crypto-winnative BCryptGenerateSymmetricKey memory leak in github.com/microsoft/go-crypto-winnative
go-crypto-winnative BCryptGenerateSymmetricKey memory leak in github.com/microsoft/go-crypto-winnative
- Record
GO-2025-3461- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:14889-1No score
govulncheck-vulndb-0.0.20250312T181707-1.1 on GA media
These are all security issues fixed in the govulncheck-vulndb-0.0.20250312T181707-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:14889-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/microsoft/go-crypto-winnativeGo | before 0.0.0-20250211154640-f49c8e1379ea | 0.0.0-20250211154640-f49c8e1379ea |
golangAzure Linux:3 | through 1.25.7-1 | None known |
golangAzure Linux:3 | 1.27.0 to 1.27.1-1 | None known |
govulncheck-vulndbopenSUSE:Tumbleweed From an advisory covering 31 CVEs | before 0.0.20250312T181707-1.1 | 0.0.20250312T181707-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-25199 is a high vulnerability (CVSS 7.5) in Microsoft Go-crypto-winnative, published February 12, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.44%, the 73rd percentile. Fixed in github.com/microsoft/go-crypto-winnative 0.0.0-20250211154640-f49c8e1379ea.
References
github.com/microsoft/go-crypto-winnative/security/advisories/GHSA-29c6-3hcj-89cf
nvd.nist.gov/vuln/detail/CVE-2025-25199
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suse.com/security/cve/CVE-2024-57603