CVE-2020-27634

Description

In Contiki 4.5, TCP ISNs are improperly random.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.18%
Third-Party Advisory cisa.gov Third-Party Advisory forescout.com Third-Party Advisory forescout.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.forescout.com third party advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01 third party advisory us government resource
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-27634?
CVE-2020-27634 has been scored as a critical severity vulnerability.
How to fix CVE-2020-27634?
To fix CVE-2020-27634, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27634 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-27634 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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