CVE-2021-35602Network attack vector

Hangs and data modification via undisclosed options flaw

Published Oct 20, 2021 · Updated Sep 25, 2024

Denial of service and data modification in Oracle MySQL Server 8.0.26 and earlier allow remote authenticated users to disrupt or alter data. Oracle identifies the affected locus only as Server: Options and has not published the option, code path, or incorrect operation that causes the flaw. Exploitation requires high privileges and high attack complexity; successful attacks can hang or repeatedly crash the server and update, insert, or delete some accessible data.

CVSS severity5.0
Medium
EPSS probability1.94%
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 and data modification in Oracle MySQL Server 8.0.26 and earlier allow remote authenticated users to disrupt or alter data. Oracle identifies the affected locus only as Server: Options and has not published the option, code path, or incorrect operation that causes the flaw. Exploitation requires high privileges and high attack complexity; successful attacks can hang or repeatedly crash the server and update, insert, or delete some accessible data.

The record

CVE
CVE-2021-35602
Published
Oct 20, 2021
Updated
Sep 25, 2024
Vendor
Oracle Corporation
Product
MySQL Server
Classifications
T1565
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2024Record 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=8.0.26 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Serverversion=8.0.26 and prior

Published CVSS scores

5.0Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565Data Manipulation

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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