CVE-2020-6996: trianglemicroworks dnp3_source_code_library Stack-based Buffer Overflow
Vulnerability summary
CVE-2020-6996 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in trianglemicroworks dnp3_source_code_library. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities.
Timeline
- 15-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.35%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
0.00 pp
From 1.35% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Trianglemicroworks1 product
- dnp3_source_code_library≥ 3.16.00, ≤ 3.25.01
1 vendor · 1 product
References
1 links- www.us-cert.gov/ics/advisories/icsa-20-105-02X Refsource MISCThird Party AdvisoryUS Government Resource