CVE-2022-33947Network attack vector

Authenticated Tomcat restart via unsafe deserialization

Published Aug 4, 2022 · Updated Sep 16, 2024

Deserialization in F5 BIG-IP DNS affected releases allows remote authenticated users to restart Tomcat and perform unauthorized DNS operations. F5 has not disclosed which TMUI pages or requests deserialize untrusted data, so the exact unsafe operation and input format remain undisclosed. Network access to TMUI and credentials with at least Operator role privileges are required; successful requests restart Tomcat or perform unauthorized DNS actions.

CVSS severity5.4
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in F5 BIG-IP DNS affected releases allows remote authenticated users to restart Tomcat and perform unauthorized DNS operations. F5 has not disclosed which TMUI pages or requests deserialize untrusted data, so the exact unsafe operation and input format remain undisclosed. Network access to TMUI and credentials with at least Operator role privileges are required; successful requests restart Tomcat or perform unauthorized DNS actions.

The record

CVE
CVE-2022-33947
Published
Aug 4, 2022
Updated
Sep 16, 2024
Vendor
F5 Networks
Product
BIG-IP DNS
Classifications
CWE-502, CAPEC-586, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=13.1.0 <13.1.x*
  2. Affected versionversion=14.1.x <14.1.5
  3. Affected versionversion=15.1.x <15.1.6.1
  4. Affected versionversion=16.1.x <16.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

F5 Networks · BIG-IP DNSversion=13.1.0 <13.1.x*; version=14.1.x <14.1.5; version=15.1.x <15.1.6.1; version=16.1.x <16.1.3

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.4F5 NetworksCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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