CVE-2026-6554: libpcap 0 to before 1.10.7

CVE-2026-6554 affects azl3 libpcap 1.10.6-1 on Azure Linux 3.0. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00105 (percentile 0.01021), scored 21-Oct-2026.

Affected technology

libpcap · 0 to before 1.10.7
The Tcpdump Group

Component: BPF interpreter
Function: pcapint_filter_with_aux_data()
File: bpf_filter.c

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 22-Oct-2026 20:55 UTC

CWE: CWE-835
Product: azl3 libpcap 1.10.6-1 on Azure Linux 3.0
CCR priority: 30.0 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00105 · percentile 0.01021 · 2026-10-21
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-22 01:10:55.718059+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-22 21:33:20.763056+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-6554.html