CVE-2023-21949Network attack vector

Unauthenticated modification of component-accessible data

Published Jul 18, 2023 · Updated Sep 13, 2024

Integrity flaw in Oracle Advanced Security 19.3 through 19.19 and 21.3 through 21.10 allows remote attackers to modify data via Oracle Net. Oracle has not published the flawed code locus or the operation that mishandles network input. Exploitation requires no credentials but has high complexity, and successful attacks can update, insert, or delete some component-accessible data.

CVSS severity3.7
Low
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integrity flaw in Oracle Advanced Security 19.3 through 19.19 and 21.3 through 21.10 allows remote attackers to modify data via Oracle Net. Oracle has not published the flawed code locus or the operation that mishandles network input. Exploitation requires no credentials but has high complexity, and successful attacks can update, insert, or delete some component-accessible data.

The record

CVE
CVE-2023-21949
Published
Jul 18, 2023
Updated
Sep 13, 2024
Vendor
Oracle Corporation
Product
Oracle Advanced Security
Classifications
T1565
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 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=19.3 <=19.19
  2. Affected versionversion=21.3 <=21.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Advanced Securityversion=19.3 <=19.19; version=21.3 <=21.10

Published CVSS scores

3.7Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

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

T1565Data Manipulation

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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