CVE-2021-39921
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 3.2%
exploitation probability
3.2%top 13% of all CVEs
observed exploitation
nono source reports it
NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Wireshark Foundation · WiresharkReferences
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.jsonhttps://gitlab.com/wireshark/wireshark/-/issues/17703https://lists.debian.org/debian-lts-announce/2021/12/msg00015.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/https://security.gentoo.org/glsa/202210-04https://www.debian.org/security/2021/dsa-5019https://www.wireshark.org/security/wnpa-sec-2021-14.html