CVE-2026-70757Network attack vector

Unauthenticated server takeover via undisclosed Core flaw

Published Sep 15, 2026 · Updated Sep 15, 2026

Oracle WebLogic Server Core in four supported releases allows remote attackers to take over servers through T3 or IIOP. Oracle has not publicly disclosed the flawed Core operation or how crafted T3 or IIOP traffic triggers the compromise. Network access to a listening T3 or IIOP endpoint is sufficient; no authentication or user interaction is required, and successful exploitation grants control of the affected server in versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.

CVSS severity9.8
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 WebLogic Server Core in four supported releases allows remote attackers to take over servers through T3 or IIOP. Oracle has not publicly disclosed the flawed Core operation or how crafted T3 or IIOP traffic triggers the compromise. Network access to a listening T3 or IIOP endpoint is sufficient; no authentication or user interaction is required, and successful exploitation grants control of the affected server in versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.

The record

CVE
CVE-2026-70757
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle Corporation
Product
Oracle WebLogic Server
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=12.2.1.4.0
  2. Affected versionversion=14.1.1.0.0
  3. Affected versionversion=14.1.2.0.0
  4. Affected versionversion=15.1.1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle WebLogic Serverversion=12.2.1.4.0; version=14.1.1.0.0; version=14.1.2.0.0; version=15.1.1.0.0

Published CVSS scores

9.8Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1190Exploit Public-Facing Application

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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