CVE-2020-2511

mediumpriority · track · 31EPSS 0.013 · 71 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.32% (71st) EPSS

CVSS 4 · medium

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Core RDBMS. CVSS 3.0 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

cvss

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.7

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.1 · impact 4

v3.07.7highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · ENISA EU

v3.07.7highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · secalert_us@oracle.com USexploitability 3.1 · impact 4

v3.17.7highAV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284US

affected products (12)

Products and version ranges known to be affected.

Oracle Corporation Oracle Database≤ 12.1.0.2enisa_euvdEU
Oracle Corporation Oracle Database≤ 18cenisa_euvdEU
Oracle Corporation Oracle Database≤ 12.2.0.1enisa_euvdEU
Oracle Corporation Oracle Database≤ 19cenisa_euvdEU
Oracle Corp. Database Server≤ 19cfstec_bduRU
Oracle Corp. Database Server≤ 18cfstec_bduRU
Oracle Corp. Database Server≤ 12.2.0.1fstec_bduRU
Oracle Corp. Database Server≤ 12.1.0.2fstec_bduRU
oracle database server= 12.1.0.2nvdUScpe:2.3:a:oracle:database_server:*:*:*:*:*:*:*:*
oracle database server= 12.2.0.1nvdUScpe:2.3:a:oracle:database_server:*:*:*:*:*:*:*:*
oracle database server= 18cnvdUScpe:2.3:a:oracle:database_server:*:*:*:*:*:*:*:*
oracle database server= 19cnvdUScpe:2.3:a:oracle:database_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-01-15modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

scry

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