CVE-2021-31559

7.5 highEPSS 0.9%

High (7.5) in splunk splunk. EPSS 0.9% chance of exploitation in the next 30 days.

A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions before 8.1.5 and 8.2 versions before 8.2.1. The vulnerability impacts Indexers configured to use TCPTokens. It does not impact Universal Forwarders.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
CWE: CWE-288
Published: 2022-05-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

splunk:splunk

References

https://www.splunk.com/en_us/product-security/announcements/svd-2022-0503.html
https://www.splunk.com/en_us/product-security/announcements/svd-2022-0503.html

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