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VulnerabilityPublished

CVE-2025-53047: Oracle Database Server · Information Exposure

Affects Oracle Database ServerSource CVE Database V5

0

Not known to be exploited · CVSS 5.8 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
5.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Mavencom.oracle.database/portable-clusterwarepkg:maven/com.oracle.database/portable-clusterwareOther threatsAffected
  • =19.3
  • =21.3
  • =23.4
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately inventory their Oracle Database Server deployments to identify affected versions (19.3-19.28, 21.3-21.19, 23.4-23.9) running Portable Clusterware. Network segmentation should be enforced to restrict Bonjour protocol traffic, limiting exposure to trusted internal networks only. Disable or block Bonjour services on database servers if not required, or restrict multicast DNS traffic at network boundaries. Monitor network traffic for unusual Bonjour activity and implement intrusion detection/prevention systems with signatures targeting this vulnerability once available. Apply Oracle’s security advisories promptly when patches are released. Until patches are available, consider deploying virtual patching via Web Application Firewalls or database activity monitoring tools to detect and block suspicious queries or access patterns related to Portable Clusterware. Conduct regular audits of database access logs to detect unauthorized read attempts. Educate system administrators about the vulnerability and the importance of minimizing unnecessary network services on critical database servers.

Description

Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.28, 21.3-21.19 and 23.4-23.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via Bonjour to compromise Portable Clusterware. While the vulnerability is in Portable Clusterware, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized read access to a subset of Portable Clusterware accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N).

References

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