What is CVE-2022-33947?

CVE-2022-33947 is a medium-severity vulnerability in F5 Big-Ip DNS, classified under Deserialization of Untrusted Data. CVSS score: 5.4/10. Published 2022-08-04.

How severe is CVE-2022-33947?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Deserialization in F5 Big-Ip DNS

CVE-2022-33947

In BIG-IP Versions 16.1.x before 16.1.3, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5, and all versions of 13.1.x, a vulnerability exists in undisclosed pages of the BIG-IP DNS Traffic Management User Interface (TMUI) that allows an authenticated attacker with at least operator role privileges to cause the Tomcat process to restart and perform unauthorized DNS requests and operations through undisclosed requests. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability class: Insecure Deserialization

Published 2022-08-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.007 (51.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

F5 Big-Ip DNS — versions 13.1.0, 14.1.x, 15.1.x
F5 Big-Ip Domain Name System

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

support.f5.com/csp/article/K38893457 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-33947?: CVE-2022-33947 is a medium-severity vulnerability in F5 Big-Ip DNS, classified under Deserialization of Untrusted Data. CVSS score: 5.4/10. Published 2022-08-04.
How severe is CVE-2022-33947?: Medium severity. CVSS v3 base score is 5.4 out of 10.