Medium severity · published Sep 5, 2026
CVE-2026-6244
division by zero in libpcap before 1.10.7
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libpcap · The Tcpdump Group
before 1.10.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6244
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6244
github.com
https://github.com/the-tcpdump-group/libpcap/commit/98bb921b141aa642faedbf2ac510541c76499a19
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