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CVE-2026-6244

medium CVSS 5.5 EPSS 0.1%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2026-6244 applies to, and the release that fixes it where the sources name one.

libpcap 1.10.5 fixed in 1.10.7

At a glance

Severity
Medium
CVSS base score
5.5 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.1% probability of exploitation in the next 30 days, higher than 4% of scored vulnerabilities
Weakness
CWE-369
Published
2026-09-05
NVD CVE.org

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