CVE-2020-11899 · Severity: critical · CVSS 5.4 · Exploited in the wild · Published 2022-03-03
The Treck TCP/IP stack contains an IPv6 out-of-bounds read vulnerability. This flaw allows an attacker to potentially cause a denial-of-service or read sensitive information via network-adjacent access.
Quick answers
Is CVE-2020-11899 exploited in the wild?
Yes. CVE-2020-11899 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2020-11899?
Critical severity, with a CVSS score of 5.4, published 3 March 2022.
Which products and versions are affected?
Treck TCP/IP stack before 6.0.1.66.
Is there a fix for CVE-2020-11899?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-11899 attacked?
It is attacked from the adjacent network, in a software library.
Am I affected by CVE-2020-11899?
Check whether you run Treck Tcp/Ip Stack IPv6. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Treck TCP/IP stack before 6.0.1.66
Timeline
2020-06-16: disclosed: Initial disclosure of Ripple20 vulnerabilities.
2022-03-03: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
2022-03-03: advisory: NVD publication date.
2022-03-03: exploited: Confirmed as exploited in the wild by CISA.