Vulnerability in Microsoft .Net 6.0
CVE-2025-36855
A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due to buffer over-read. Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product read…
EPSS: 0.003 (52.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft .Net 6.0 — versions 6.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (third-party-advisory)
- .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2025-36855?
- CVE-2025-36855 is a high-severity vulnerability in Microsoft .Net 6.0, classified under Buffer Over-read. CVSS score: 8.8/10. Published 2025-09-08.
- How severe is CVE-2025-36855?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-36855 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.