CVE-2026-31911: medium-severity vulnerability in The Tcpdump Group libpcap
abort() in libpcap before 1.10.7 on an invalid BPF opcode
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.1%
libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
The Tcpdump Group · libpcapRelated CVEs — The Tcpdump Group libpcap
In the same product, most dangerous first.
CVE-2026-6554HIGHinfinte loop in libpcap before 1.10.7EPSS 0.4%CVE-2024-8006MEDIUMNULL pointer dereference in libpcap before 1.10.5 with remote packet capture supportEPSS 0.2%CVE-2023-7256MEDIUMDouble-free in libpcap before 1.10.5 with remote packet capture support.EPSS 0.2%CVE-2026-18313MEDIUMrpcapd memory leak in libpcap before 1.10.7EPSS 0.2%CVE-2026-18238MEDIUMOOBR in rpcap client in libpcap before 1.10.7EPSS 0.2%CVE-2026-6244MEDIUMdivision by zero in libpcap before 1.10.7EPSS 0.1%