# CVE-2026-76280 — Splunk Enterprise

> As of 2026-10-09, CVE-2026-76280 is a MEDIUM-severity vulnerability in Splunk Enterprise, CVSS v3.1 6.3, EPSS 0.1% (5.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-76280, most recently “Splunk Enterprise and Secure Gateway: 22 vulnerabilities patched (SVD-2026-1001/1002), including critical CVE-2026-76268 (Patroni REST API missing authentication, CVSS 9.8) and CVE-2026-76281 (listed 9.8 in advisory)”.

**Last updated:** 2026-10-09

## What is CVE-2026-76280?

In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15, and Splunk Secure Gateway versions below 3.10.11, 3.9.25, and 3.8.72, an authenticated user who does not hold the "admin" or "sc_admin" Splunk roles could modify Splunk Secure Gateway alert and mobile-device recipient data in App Key Value Store (KV Store) collections that later alert and subscription workflows use. The vulnerability is possible because the affected collections allow unrestricted write access instead of limiting writes to authorized Splunk Secure Gateway workflows. For more information see About the app key value store (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/administer-the-app-key-value-store/about-the-app-key-value-store), KV store endpoint descriptions (https://help.splunk.com/en/splunk-enterprise/leverage-rest-apis/rest-api-reference/10.4/kv-store-endpoints/kv-store-endpoint-descriptions), and About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) in the Splunk documentation.

The record classifies CVE-2026-76280 under weakness class [CWE-732](https://intel.threadlinqs.com/cwe/CWE-732). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 3 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.3 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 5.7% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-07, last modified 2026-10-09

## Is CVE-2026-76280 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Splunk](https://intel.threadlinqs.com/vendors/splunk): Enterprise, Secure Gateway

## How to fix CVE-2026-76280

No vendor patch reference has been recorded for CVE-2026-76280 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-76280

1 tracked threat in the Threadlinqs corpus references CVE-2026-76280, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Splunk Enterprise and Secure Gateway: 22 vulnerabilities patched (SVD-2026-1001/1002), including critical CVE-2026-76268 (Patroni REST API missing authentication, CVSS 9.8) and CVE-2026-76281 (listed 9.8 in advisory)](https://intel.threadlinqs.com/threat/TL-2026-3110) — CRITICAL · 2026-10-09

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [advisory.splunk.com](https://advisory.splunk.com/advisories/SVD-2026-1001)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-76280
Full detection coverage and IOCs for threats exploiting CVE-2026-76280 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp