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CVE-2026-26933

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 traf
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:98a72531a5dd2adbec5492ac79ae19ba022ca65708ffa5e8bc4c7cf1e0fd7ca4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Packetbeat","vendor":"Elastic","versions":[{"lessThanOrEqual":"9.2.4","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThanOrEqual":"8.19.10","status":"affected","version":"8.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f5f536a82bb0650f995b9b8e6ccec8f0b12cdc109e203c54bdb250c350c734d2 · sha256:9de5e96124679870… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f5f536a82bb0650f995b9b8e6ccec8f0b12cdc109e203c54bdb250c350c734d2 · sha256:9de5e96124679870… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-129","description":"CWE-129 Improper Validation of Array Index","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f5f536a82bb0650f995b9b8e6ccec8f0b12cdc109e203c54bdb250c350c734d2 · sha256:9de5e96124679870… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-11/385533"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f5f536a82bb0650f995b9b8e6ccec8f0b12cdc109e203c54bdb250c350c734d2 · sha256:9de5e96124679870… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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