# CVE-2026-76528: Protection Mechanism Failure in Splunk SOAR

Status: published. Published: 2026-10-21. Updated: 2026-11-02.

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76528 are related to protection mechanism failure and are grouped under the Common Weakness Enumeration (CWE) CWE-693.

## Remediation

- fix: Upgrade Splunk SOAR to version 8.7.0 or higher. (source: CNA: cisco)

## Affected products and versions

- Splunk / Splunk SOAR: ≥ 0; < 8.7.0 (affected, custom). Source: CNA: cisco

## Severity and prioritization

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: ADP: CISA-ADP

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: 0.13% as of 2026-11-02; percentile 2.88%

- SSVC: exploitation none; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-693

## Exploit evidence

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

## References

- https://advisory.splunk.com/advisories/SVD-2026-1011 (CNA: cisco)

- https://advisory.splunk.com/advisories/SVD-2026-1011 (psirt@cisco.com)

## Provenance

- CNA: cisco: https://www.cve.org/CVERecord?id=CVE-2026-76528; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76528; retrieved 2026-11-03; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-76528; retrieved 2026-11-02; source updated Not reported

Revision: d850f6794c0a51bcebf8e4633a7a18534b48469c261489ce4d64f549eaac488e

Canonical: https://y2.dev/cve/CVE-2026-76528

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