CVE-2021-2323Network attack vector

Unauthenticated access to critical banking data

Published Jul 20, 2021 · Updated Sep 26, 2024

Information disclosure in Oracle FLEXCUBE Universal Banking 12.3, 12.4, and 14.0 through 14.4 allows remote attackers to read critical data. Oracle identifies the affected locus as Flex-Branch but has not published the request field, endpoint, or data-access operation that mishandles untrusted HTTP input. The attack requires no authentication or user interaction, but high attack complexity constrains exploitation; successful attacks expose application-accessible data without alteration or service interruption.

CVSS severity5.9
Medium
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Oracle FLEXCUBE Universal Banking 12.3, 12.4, and 14.0 through 14.4 allows remote attackers to read critical data. Oracle identifies the affected locus as Flex-Branch but has not published the request field, endpoint, or data-access operation that mishandles untrusted HTTP input. The attack requires no authentication or user interaction, but high attack complexity constrains exploitation; successful attacks expose application-accessible data without alteration or service interruption.

The record

CVE
CVE-2021-2323
Published
Jul 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle
Product
Oracle FLEXCUBE Universal Banking
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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=12.3
  2. Affected versionversion=12.4
  3. Affected versionversion=14.0-14.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle FLEXCUBE Universal Bankingversion=12.3; version=12.4; version=14.0-14.4

Published CVSS scores

5.9OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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

No sourced classifications are available.

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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