---
id: CVE-2026-101761
title: >-
  mysql: mysql: Denial of Service via security encryption component
  (CVE-2026-101761)
summary: >-
  A flaw was found in MySQL. An unauthenticated remote attacker with network
  access via multiple protocols can exploit this vulnerability in the security
  encryption component to cause the service to hang or crash repeatedly.
  Successful explo…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-770
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
  - enterprise_linux 9
published: '2026-10-20'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T22:19:09+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101761.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101761.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-101761'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2557556'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-101761'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101761'
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00322
epssPercentile: 0.25063
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-22T17:26:25.546790Z'
ingestedAt: '2026-10-20T22:23:33.929Z'
---

## Overview

A flaw was found in MySQL. An unauthenticated remote attacker with network access via multiple protocols can exploit this vulnerability in the security encryption component to cause the service to hang or crash repeatedly. Successful exploitation results in a complete Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101761.json)

**mysql: mysql: Denial of Service via security encryption component** — rated Moderate by Red Hat. Released 2026-10-20, updated 2026-10-22.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Hardened Images

## Remediation

Affected