CVE-2026-46862Network attack vector

Unauthenticated service hang or crash

Published Jun 16, 2026 · Updated Jun 16, 2026

Denial of service in Oracle MySQL Router 8.4.0 through 8.4.9 and 9.0.0 through 9.7.0 allows remote attackers to hang or crash it via TLS. Oracle identifies the affected locus only as Router: General and has not disclosed the TLS input or resource-handling operation that causes the failure. No credentials or user interaction are required; successful requests can hang the routing service or cause frequently repeatable crashes, interrupting database connection routing without reported confidentiality or integrity impact.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle MySQL Router 8.4.0 through 8.4.9 and 9.0.0 through 9.7.0 allows remote attackers to hang or crash it via TLS. Oracle identifies the affected locus only as Router: General and has not disclosed the TLS input or resource-handling operation that causes the failure. No credentials or user interaction are required; successful requests can hang the routing service or cause frequently repeatable crashes, interrupting database connection routing without reported confidentiality or integrity impact.

The record

CVE
CVE-2026-46862
Published
Jun 16, 2026
Updated
Jun 16, 2026
Vendor
Oracle
Product
MySQL Router
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 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=8.4.0 <=8.4.9
  2. Affected versionversion=9.0.0 <=9.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · MySQL Routerversion=8.4.0 <=8.4.9; version=9.0.0 <=9.7.0

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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