CVE-2021-31559

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-288

Affected software

No affected versions have been published.

Timeline

Published: May 6, 2022
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-31567.8Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root CVE-2021-315629.1The SSL/TLS configuration of Fresenius Kabi Agilia Link + version 3.0 has serious deficiencies that may allow an attacker to compromise SSL/CVE-2021-315667.8An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of CVE-2021-315676.8Authenticated (admin+) Arbitrary File Download vulnerability discovered in Download Monitor WordPress plugin (versions <= 4.4.6). The plugin CVE-2021-315719.8The kernel in Amazon Web Services FreeRTOS before 10.4.3 has an integer overflow in queue.c for queue creation.CVE-2021-315729.8The kernel in Amazon Web Services FreeRTOS before 10.4.3 has an integer overflow in stream_buffer.c for a stream buffer.CVE-2021-315739.8In Config Manager, there is a possible command injection due to improper input validation. This could lead to remote escalation of privilege CVE-2021-315749.8In Config Manager, there is a possible command injection due to improper input validation. This could lead to remote escalation of privilege CVE-2021-315759.8In Config Manager, there is a possible command injection due to improper input validation. This could lead to remote escalation of privilege CVE-2021-315767.5In Boa, there is a possible information disclosure due to a missing permission check. This could lead to remote information disclosure to a CVE-2021-315779.8In Boa, there is a possible escalation of privilege due to a missing permission check. This could lead to remote escalation of privilege fro CVE-2021-315789.8In Boa, there is a possible escalation of privilege due to a stack buffer overflow. This could lead to remote escalation of privilege from a