Vulnerability Details : CVE-2021-27432
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.
Products affected by CVE-2021-27432
- cpe:2.3:a:opcfoundation:ua-.net-legacy:-:*:*:*:*:*:*:*
- cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27432
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27432
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-27432
-
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.Assigned by: ics-cert@hq.dhs.gov (Primary)
References for CVE-2021-27432
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03
OPC Foundation UA Products Built with .NET Framework | CISAThird Party Advisory;US Government Resource
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