CVE-2019-2956

5.7 MEDIUM 1% exploit odds Fix listed

What it is

Vulnerability in the Core RDBMS (jackson-databind) 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 multiple protocols to compromise Core RDBMS (jackson-databind). Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Core RDBMS (jackson-databind). CVSS 3.0 Base Score 5.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H).

At a glance

Exploitability: Can be exploited over the network with a low-privilege account, but needs a user to act. High risk of service disruption.
Exploit odds: 1.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2019-10-16 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:34 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.1% in the next 30 days (EPSS).
Severity: 5.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2019-10-16 18:15 UTC
Last modified: 2026-06-17 02:34 UTC
Exploit probability: 1.1% · EPSS, next 30 days
Record status: Modified

Affected

Oracle Database Server 12.1.0.2
Oracle Database Server 12.2.0.1
Oracle Database Server 18c
Oracle Database Server 19c

Attack profile CVSS 3.1 · 5.7

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record