vulnerability
Wireshark : CVE-2021-39921 : Modbus dissector crash
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Nov 18, 2021 | Nov 18, 2021 | Mar 30, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Nov 18, 2021
Added
Nov 18, 2021
Modified
Mar 30, 2026
Description
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
Solutions
wireshark-upgrade-3_2_18wireshark-upgrade-3_4_10
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.