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CVE Record

CVE-2020-2955: Vulnerability in the Oracle FLEXCUBE Core Banking product of Oracle Financial Services Applications (compon...

Vulnerability in the Oracle FLEXCUBE Core Banking product of Oracle Financial Services Applications (component: Transaction Processing). The supported version that is affected is 4.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Core Banking. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle FLEXCUBE Core Banking accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Core Banking accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle FLEXCUBE Core Banking. CVSS 3.0 Base Score 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

MediumCVSS 6.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-2955 affects Oracle FLEXCUBE Core Banking 4.0. A low-privileged user who can reach the application over HTTP could read some banking data, change some data, or cause partial service disruption. This is not rated critical, but it matters because it affects core banking transaction processing.

Executive priority

Treat this as a moderate-priority banking application risk. Prioritize remediation where FLEXCUBE 4.0 supports production transaction processing or where many low-privileged users can reach the HTTP interface.

Technical view

Oracle describes an easily exploitable vulnerability in FLEXCUBE Core Banking, Transaction Processing. The vector is network access over HTTP with low privileges and no user interaction. Impact is limited confidentiality, integrity, and availability: unauthorized read of some accessible data, unauthorized update/insert/delete of some data, and partial denial of service.

Likely exposure

Exposure is most likely in organizations running Oracle FLEXCUBE Core Banking version 4.0 where low-privileged users or reachable internal actors can access the HTTP interface for transaction processing.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Oracle’s CVSS vector indicates exploitation is low complexity, network reachable, requires low privileges, and needs no user interaction.

Researcher notes

No CWE is provided in the bundle. The useful technical anchors are Oracle FLEXCUBE Core Banking 4.0, Transaction Processing, HTTP network vector, low privileges, no user interaction, and limited C/I/A impact. Patch identifiers require Oracle advisory or support confirmation.

Mitigation direction

  • Review Oracle’s April 2020 Critical Patch Update guidance for FLEXCUBE Core Banking.
  • Apply Oracle-provided patches or supported upgrade guidance for affected version 4.0.
  • Restrict HTTP access to FLEXCUBE to trusted networks and required users.
  • Review low-privileged roles with access to transaction processing functions.
  • Escalate to Oracle support if patch applicability is unclear.

Validation and detection

  • Inventory FLEXCUBE Core Banking deployments and confirm whether version 4.0 is present.
  • Verify the April 2020 CPU or later relevant Oracle fixes are applied.
  • Confirm transaction processing interfaces are not broadly reachable over HTTP.
  • Review logs for unusual low-privileged data changes or partial service disruptions.
  • Check access controls for accounts with transaction processing reachability.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-2955 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.3CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L2.83.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.3Medium
CVSS 3.0 vector shape for CVE-2020-2955Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationFLEXCUBE Core Banking4.0Listed
Weakness

CWE details

No CWE listed

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