Microsoft · BCryptGenerateSymmetricKey memory leak
Affects MicrosoftSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 08:30 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 1.4% chance of exploitation in 30 days – higher than 73% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 11 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in– |
Description
CVE-2025-25199 is a memory leak vulnerability related to the BCryptGenerateSymmetricKey function in Microsoft software. The vulnerability is categorized under CWE-401, indicating improper release of memory. No CVSS score or detailed technical exploitation information is provided. There is no indication of known exploits in the wild or an official patch available at this time.