CVE-2020-11899Vulnerability
Treck TCP/IP stack Out-of-Bounds Read Vulnerability
Exploited in the wildCISA added it to its Known Exploited Vulnerabilities list on .
Reported by 1 independent source · first reported by Cyble · last reported
Last reported 10 days ago
CISA KEVAdded 3 Mar 2022
Fix due 17 Mar 2022
Used by ransomware: not knownCISA KEV catalogue
Fix due 17 Mar 2022
Used by ransomware: not knownCISA KEV catalogue
EPSS18.4%
higher than 97% of CVEsFIRST EPSS, as of 23 Oct 2026
higher than 97% of CVEsFIRST EPSS, as of 23 Oct 2026
What the reports say
1 report, newest first · the exact sentence from each-
The Week in Vulnerabilities: Toptech, Lantronix, Langflow, and CISA Malcolm Flaws“CVE-2020-11899, an IPv6 out-of-bounds read in the Treck TCP/IP stack, drew far more exploitation attempts than any other CVE this week.”
Indicators reported together
named in the same reportsAlso named with it: CVE-2019-12255, CVE-2019-12260, CVE-2019-12261, CVE-2019-12263, CVE-2023-46604, CVE-2025-3248, CVE-2026-60137, CVE-2026-63030, CVE-2026-9198, CVE-2024-4577, CVE-2025-68613, CVE-2019-0708, CVE-2026-4020, CVE-2018-10561, CVE-2024-6587, CVE-2024-25600, CVE-2026-84411, CVE-2026-22755, CVE-2026-100291, CVE-2026-96587
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