CVE-2026-26933: Improper Validation of Array Index in Packetbeat Leading to Denial of Service
Elastic · Packetbeat
Vendor fix available · Affected: Elastic Packetbeat · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 17% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Elastic · Packetbeatfrom 9.0.0 up to and including 9.2.4; from 8.0.0 up to and including 8.19.10
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Elastic
- Published
- March 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-26933 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.