CVE-2026-76338Network attack vector

Admin token forgery via unsigned peer identity

Published Aug 19, 2026 · Updated Aug 21, 2026

Improper authentication in Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 allows attackers to forge an administrative session token. The distributed search authentication token endpoint does not require a signed request to identify a configured search peer, so peer validation can fall back to shared local key material when a trusted distributed search private key is available. Reachability requires access to that trusted private key; with it, remote attackers can authenticate as an administrative peer, read indexed data, change configuration, and interrupt service.

CVSS severity8.1
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 allows attackers to forge an administrative session token. The distributed search authentication token endpoint does not require a signed request to identify a configured search peer, so peer validation can fall back to shared local key material when a trusted distributed search private key is available. Reachability requires access to that trusted private key; with it, remote attackers can authenticate as an administrative peer, read indexed data, change configuration, and interrupt service.

The record

CVE
CVE-2026-76338
Published
Aug 19, 2026
Updated
Aug 21, 2026
Vendor
Zoom Video Communications, Inc.
Product
Splunk Enterprise
Classifications
CWE-287, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0 <10.0.9
  2. Affected versionversion=10.2 <10.2.6
  3. Affected versionversion=10.4 <10.4.2
  4. Affected versionversion=9.4 <9.4.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoom Video Communications, Inc. · Splunk Enterpriseversion=10.0 <10.0.9; version=10.2 <10.2.6; version=10.4 <10.4.2; version=9.4 <9.4.14

Published CVSS scores

8.1TenableCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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