Vulnerability · Published Jan 26, 2021 · Assigned by icscert
CVE-2020-27297
Critical 9.8
In plain English
A critical-severity heap buffer overflow in OPC UA Tunneller. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.5%top 15.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The affected product is vulnerable to a heap-based buffer overflow, which may allow an attacker to manipulate memory with controlled values and remotely execute code on the OPC UA Tunneller (versions prior to 6.3.0.8233).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | OPC UA Tunneller | All versions prior to 6.3.0.8233 |
Weakness: CWE-122
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03 x_refsource_MISC