Information disclosure in Microsoft .Net Framework
CVE-2021-27434
Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.017 (76.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Microsoft .Net Framework — versions 3.5, 4.0, 4.5
- Unified-Automation .Net Based Opc Ua Client\/server Sdk
- Opc Ua Products Built With The .Net Framework 4.5, 4.0, And 3.5 — versions Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only)
Weakness classification (CWE)
References
- us-cert.cisa.gov/ics/advisories/icsa-21-133-04 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27434?
- CVE-2021-27434 is a high-severity vulnerability in Microsoft .Net Framework, classified under Information Disclosure. CVSS score: 7.5/10. Published 2021-05-20.
- How severe is CVE-2021-27434?
- High severity. CVSS v3 base score is 7.5 out of 10.