CVE-2023-21890

Name: CVE-2023-21890
Creator: NVD / NIST
Published: 2023-01-18T00:15:16.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2023-21890 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Vulnerability in the Oracle Communications Converged Application Server product of Oracle Communications (component: Core). Supported versions that are affected are 7.1.0 and 8.0.0. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

Vulnerability in the Oracle Communications Converged Application Server product of Oracle Communications (component: Core). Supported versions that are affected are 7.1.0 and 8.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via UDP to compromise Oracle Communications Converged Application Server. Successful attacks of this vulnerability can result in takeover of Oracle Communications Converged Application Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.84%

53.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Oracle	Communications Converged Application Server	7.1.0
Oracle	Communications Converged Application Server	8.0.0

References

https://www.oracle.com/security-alerts/cpujan2023.htmlPatch, Vendor Advisory
https://www.oracle.com/security-alerts/cpujan2023.htmlPatch, Vendor Advisory

Timeline

Published: Jan 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21890?

How severe is CVE-2023-21890?

CVE-2023-21890 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21890?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-21890?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST