CVE-2020-6996
CVE-2020-6996 is a critical-severity vulnerability in Trianglemicroworks Dnp3 Source Code Library with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (68th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Trianglemicroworks Dnp3 Source Code Library
- Published:
- Last modified:
Description
Triangle MicroWorks DNP3 Outstation LibrariesDNP3 Outstation .NET Protocol components and DNP3 Outstation ANSI C source code libraries are affected:3.16.00 through 3.25.01. A specially crafted message may cause a stack-based buffer overflow. Authentication is not required to exploit this vulnerability.
Frequently asked questions
- What is CVE-2020-6996?
- Triangle MicroWorks DNP3 Outstation LibrariesDNP3 Outstation .NET Protocol components and DNP3 Outstation ANSI C source code libraries are affected:3.16.00 through 3.25.01. A specially crafted message may cause a stack-based buffer overflow. Authentication is not required to exploit this vulnerability.
- How severe is CVE-2020-6996?
- CVE-2020-6996 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-6996 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-6996?
- CVE-2020-6996 affects Trianglemicroworks Dnp3 Source Code Library. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-6996?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-6996 published?
- CVE-2020-6996 was published on 2020-04-15 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:trianglemicroworks:dnp3_source_code_library:*:*:*:*:*:*:*:*
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