Vulnerability · Published May 20, 2021 · Assigned by icscert
CVE-2021-27432
High 7.5
In plain English
A high-severity security flaw in OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.9%top 19.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy | OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy |
Weakness: CWE-674
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03 x_refsource_MISC