CVE-2022-41832Network attack vector

Unauthenticated service interruption via SIP memory exhaustion

Published Oct 19, 2022 · Updated May 8, 2025

Resource exhaustion in F5 BIG-IP allows remote attackers to interrupt service by sending crafted SIP traffic to an exposed virtual server. SIP message processing fails to release memory after certain undisclosed messages, causing memory utilization to rise. A SIP profile must be assigned to the virtual server; no authentication or user action is required, and the documented consequence is availability loss only.

CVSS severity7.5
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in F5 BIG-IP allows remote attackers to interrupt service by sending crafted SIP traffic to an exposed virtual server. SIP message processing fails to release memory after certain undisclosed messages, causing memory utilization to rise. A SIP profile must be assigned to the virtual server; no authentication or user action is required, and the documented consequence is availability loss only.

The record

CVE
CVE-2022-41832
Published
Oct 19, 2022
Updated
May 8, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-401, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 19, 2022CVE publishedPublication date reported by the CVE source.
  2. May 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=13.1.x <13.1.5.1
  2. Affected versionversion=14.1.x <14.1.5.1
  3. Affected versionversion=15.1.x <15.1.6.1
  4. Affected versionversion=16.1.x <16.1.3.1
  5. Affected versionversion=17.0.x <17.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=13.1.x <13.1.5.1; version=14.1.x <14.1.5.1; version=15.1.x <15.1.6.1; version=16.1.x <16.1.3.1; version=17.0.x <17.0.0.1

Published CVSS scores

7.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.002Service Exhaustion Flood

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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