RCE in Microsoft .Net Framework
CVE-2018-8540
A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka ".NET Framework Remote Code Injection Vulnerability." This affects Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 4.6.2.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.216 (97.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.216 · newest: 0.216 · change: 0.000
Affected products
- Microsoft .Net Framework — versions 3.5 on Windows 10 for 32-bit Systems, 3.5 on Windows 10 for x64-based Systems, 3.5 on Windows 10 Version 1607 for 32-bit Systems
- Microsoft .Net Framework — versions 3.5, 3.5.1, 4.5.2
- Microsoft Windows 10 — versions 1607, 1703, 1709
- Microsoft Windows 7
- Microsoft Windows 8.1
- Microsoft Windows Rt 8.1
- Microsoft Windows Server 2008 — versions r2
- Microsoft Windows Server 2012 — versions r2
- Microsoft Windows Server 2016 — versions 1709, 1803
- Microsoft Windows Server 2019
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8540 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/106073 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-8540?
- CVE-2018-8540 is a critical-severity vulnerability in Microsoft .Net Framework, classified under Code Injection. CVSS score: 9.8/10. Published 2018-12-12.
- How severe is CVE-2018-8540?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-8540 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.