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Vulnerabilities

Threat intelligence · CVE-2021-2351

Vulnerability in the Advanced Networking Option component of Oracle Database Server.

Published Jul 21, 2021 · catalog updated Nov 2, 2026 · advanced networking option

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-2351. EPSS is 2.43%. Act only if a listed version of advanced networking option is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.43%
Remediation
Advisory link
Affected products
cpe oracle/advanced networking option · cpe oracle/agile engineering data management · cpe oracle/agile product lifecycle management · cpe oracle/agile product lifecycle management for process · cpe oracle/airlines data model

Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option. Note: The July 2021 Critical Patch Update introduces a number of Native Network Encryption changes to deal with vulnerability CVE-2021-2351 and prevent the use of weaker ciphers. Customers should review: "Changes in Native Network Encryption with the July 2021 Critical Patch Update" (Doc ID 2791571.1). CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe oracle/advanced networking option12.1.0.2
  • cpe oracle/advanced networking option12.2.0.1
  • cpe oracle/agile engineering data management6.2.1.0
  • cpe oracle/agile product lifecycle management9.3.6
  • cpe oracle/agile product lifecycle management for process6.2.2.0
  • cpe oracle/agile product lifecycle management for process6.2.3.0
  • cpe oracle/airlines data model12.1.1.0.0
  • cpe oracle/airlines data model12.2.0.1.0

How to fix CVE-2021-2351

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-2351. EPSS is 2.43%. Act only if a listed version of advanced networking option is installed.

Which versions are affected?

Compare what you have installed with oracle/advanced networking option 12.1.0.2; oracle/advanced networking option 12.2.0.1; oracle/agile engineering data management 6.2.1.0; oracle/agile product lifecycle management 9.3.6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-327: Use of a Broken or Risky Cryptographic Algorithm; CWE-384. EPSS 2.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Oracle Database security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 2, 2022 · AlienVault OTX

    Detected

    Vulnerabilities in Oracle Primavera Products Multiple vulnerabilities have been identified in the Oracle Primavera products, leading to code execution and path traversal conditions. How it can be Exploited CVE-2021-2351: The remote code execution vulnerability exists in Oracle Primavera Data Warehouse & Oracle Primavera Analytics due to improper input validation within the Advanced Networking Opti

  2. Nov 2, 2026 · NIST NVD

    Updated

    Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulne

Sources

  • CVE.orgVulnerability recordCVE-2021-2351

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2021-2351

    Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced N

    nvd.nist.gov
  • AlienVault OTXThreat intelligenceCVE-2021-2351
    otx.alienvault.com

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • NIST NVDNov 2, 2026
  • AlienVault OTXNov 2, 2026