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CVE-2026-78604

Incorrect Permission Assignment for Critical Resource in Elastic Agent Leading to Local Privilege Escalation to SYSTEM

High7.8EPSS 0.15%
Published
Updated
Reserved
Assigned by
elastic

Description

Incorrect Permission Assignment for Critical Resource (CWE-732) in Elastic Agent can lead to local privilege escalation via Replace Binaries (CAPEC-642). On Windows systems where Elastic Agent is installed in unprivileged mode, resources used by the agent service are created with access controls broader than required. A local user could take advantage of this to cause the service to execute code of their choosing, ultimately obtaining SYSTEM-level privileges on the host.

Scores

CVSS scores of CVE-2026-78604, by who scored it
Scored byCVSSScoreVector
elasticCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.15% · top 96% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Elastic · Elastic Agent

    • affected 8.0.0 – ≤ 8.19.20
    • affected 9.0.0 – ≤ 9.4.5
    • affected 9.5.0 – ≤ 9.5.1

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .