CVE-2025-68390: Elasticsearch Allocation of Resources Without Limits or Throttling

mediumCVSS 4.9CVE-2025-68390

CSIRTS triage

vendor: Elastic product: Elasticsearch Denial of service

What: Elasticsearch allows allocation of resources without limits or throttling, enabling denial of service through resource exhaustion.
Who is affected: Elasticsearch deployments exposed to untrusted users or without strict resource limits.
Urgency: Medium severity (CVSS 4.9); can be exploited to cause service unavailability through unbounded resource consumption.
Action: Update Elasticsearch to a patched version implementing resource allocation limits and throttling.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 4.9
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-68390

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-683900.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-68390	coverage & exploitation status	NVD · CVE.org

Recent advisories for Elasticsearch Allocation of

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-72656: Memory Allocation with Excessive Size Value (CWE-789) in the ES|QL query processing of Elastic…nvd · 2026-08-13
mediumCVE-2026-72645: Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of s…nvd · 2026-08-13
mediumCVE-2026-72639: Elasticsearch does not enforce an upper bound on a user-supplied count accepted by a search hi…nvd · 2026-08-13
mediumCVE-2026-72636: Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a d…nvd · 2026-08-13
mediumCVE-2025-68384: Elasticsearch Allocation of Resources Without Limits or Throttlingmsrc · 2026-08-06
mediumCVE-2026-63136: Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via…nvd · 2026-07-21