CVE-2020-26421

Public Exploit

Description

Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.

Category

4.2
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory wireshark.org
Affected: The Wireshark Foundation Wireshark
Published at:
Updated at:

References

Link Tags
https://www.wireshark.org/security/wnpa-sec-2020-17.html vendor advisory
https://gitlab.com/wireshark/wireshark/-/issues/16958 issue tracking exploit third party advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.json third party advisory
https://security.gentoo.org/glsa/202101-12 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YHWDZPWQJMLK64VFDWJC5SEGPNH6Y72Z/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M75HYXU36SP6GHIDPHNZGJKEO6TX4C4Y/ vendor advisory
https://www.oracle.com/security-alerts/cpuApr2021.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-26421?
CVE-2020-26421 has been scored as a medium severity vulnerability.
How to fix CVE-2020-26421?
To fix CVE-2020-26421, 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-2020-26421 being actively exploited in the wild?
It is possible that CVE-2020-26421 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-26421?
CVE-2020-26421 affects The Wireshark Foundation Wireshark.
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