High severity · published Aug 24, 2023
CVE-2023-4512
CBOR dissector crash in Wireshark 4.0.0 to 4.0.6 allows denial of service via packet injection or crafted capture file
7.5
CVSS
0.5%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Wireshark · Wireshark
4.0.0 through 4.0.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4512
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4512
Exploit
https://gitlab.com/wireshark/wireshark/-/issues/19144
Issue Tracking
https://www.wireshark.org/security/wnpa-sec-2023-23.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HCUPLDY7HLPO46PHMGIJSUBJFTT237C/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4AVRUYSHDNEAJILVSGY5W6MPOMG2YRF/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TRKHFQPWFU7F3OXTL6IEIQSJG6FVXZTZ/
More from Wireshark
9.8
CVE-2026-76886
Heap-based Buffer Overflow in Wireshark
9.8
CVE-2022-0582
Unaligned access in the CSN.1 protocol dissector in Wireshark 3.6.0 to 3.6.1 and 3.4.0 to 3.4.11 allows denial of service via packet injection or crafted capture file
9.8
CVE-2018-6836
The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers…
8.8
CVE-2026-95387
Heap-based Buffer Overflow in Wireshark
8.8
CVE-2026-5402
Heap-based Buffer Overflow in Wireshark