CVE-2026-46833Network attack vector

Unauthenticated takeover of Net Service

Published May 28, 2026 · Updated May 28, 2026

Oracle Database Server 23.4.0 through 23.26.2 allows remote attackers to take over Net Service through unauthenticated TLS access. Oracle has not published the vulnerable operation or the nature of the flaw in Net Service's TLS processing. Exploitation requires a difficult network attack over TLS; successful attacks compromise Net Service and can affect products beyond its security scope.

CVSS severity9.0
Critical
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Oracle Database Server 23.4.0 through 23.26.2 allows remote attackers to take over Net Service through unauthenticated TLS access. Oracle has not published the vulnerable operation or the nature of the flaw in Net Service's TLS processing. Exploitation requires a difficult network attack over TLS; successful attacks compromise Net Service and can affect products beyond its security scope.

The record

CVE
CVE-2026-46833
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Oracle
Product
Oracle Database
Classifications
T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=23.4.0 <=23.26.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle Databaseversion=23.4.0 <=23.26.2

Published CVSS scores

9.0OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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