CVE-2022-23012Network attack vector

Service interruption via HTTP/2 double free

Published Jan 25, 2022 · Updated Aug 3, 2024

Double-free in the HTTP/2 profile in F5 BIG-IP 15.1.x before 15.1.4.1 and 14.1.x before 14.1.4.5 allows remote attackers to crash TMM. The published record identifies a double free in HTTP/2 request handling but does not disclose the request structure or specific parser operation. Exposure requires an HTTP/2 profile on a reachable virtual server; successful triggering interrupts application traffic without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double-free in the HTTP/2 profile in F5 BIG-IP 15.1.x before 15.1.4.1 and 14.1.x before 14.1.4.5 allows remote attackers to crash TMM. The published record identifies a double free in HTTP/2 request handling but does not disclose the request structure or specific parser operation. Exposure requires an HTTP/2 profile on a reachable virtual server; successful triggering interrupts application traffic without reported data disclosure or modification.

The record

CVE
CVE-2022-23012
Published
Jan 25, 2022
Updated
Aug 3, 2024
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-415, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=15.1.x before 15.1.4.1 and 14.1.x before 14.1.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=15.1.x before 15.1.4.1 and 14.1.x before 14.1.4.5

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1NVDAV:N/AC:M/Au:N/C:N/I:N/A:C

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-415Double Free
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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