# CVE-2026-108309: Tanium addressed an uncontrolled resource consumption vulnerability in Performance Client Extension.

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

Tanium addressed an uncontrolled resource consumption vulnerability in Performance Client Extension.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Tanium / Endpoint Configuration Toolset Solution: ≥ 1.51; < 1.51.60 (affected, custom); ≥ 1.59; < 1.59.50 (affected, custom); ≥ 1.71; < 1.71.25 (affected, custom). Source: CNA: Tanium
- Tanium / performance-cx: ≥ 2.7.648; < 2.7.648 (affected, semver); ≥ 2.8.2110; < 2.8.2110 (affected, semver); ≥ 2.9.1165; < 2.9.1165 (affected, semver); ≥ 2.11.1312; < 2.11.1312 (affected, semver); ≥ 2.13.1010; < 2.13.1010 (affected, semver); ≥ 2.14.56; < 2.14.56 (affected, semver). Source: CNA: Tanium

## Severity and prioritization

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: CNA: Tanium

- CISA KEV: No listing in collected sources

- EPSS: 0.11% as of 2026-11-04; percentile 1.30%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-770

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://security.tanium.com/TAN-2026-070 (CNA: Tanium)

## Provenance

- CNA: Tanium: https://www.cve.org/CVERecord?id=CVE-2026-108309; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-108309; retrieved 2026-11-04; source updated Not reported

Revision: 2b086d43c20ad8f9b29b2c3c08826405e2ce3e07ad13f4885e15a29ce672210d

Canonical: https://y2.dev/cve/CVE-2026-108309

## Agent and API access

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.