CVE-2026-26933: medium-severity vulnerability in Elastic Packetbeat
Improper Validation of Array Index in Packetbeat Leading to Denial of Service
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.7epss 0.3%
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Elastic · PacketbeatRelated CVEs — Elastic Packetbeat
In the same product, most dangerous first.
CVE-2017-11480—CVE-2017-11480EPSS 1.4%CVE-2026-26932MEDIUMImproper Validation of Array Index in Packetbeat Leading to Denial of ServiceEPSS 0.5%CVE-2025-68381MEDIUMPacketbeat Improper Bounds CheckEPSS 0.5%CVE-2025-68388MEDIUMCVE-2025-68388EPSS 0.4%CVE-2025-68382MEDIUMPacketbeat Out-of-bounds ReadEPSS 0.2%CVE-2026-0529MEDIUMImproper Validation of Array Index in Packetbeat Leading to Overflow BuffersEPSS 0.2%