CVE-2022-26890Network attack vector

Unauthenticated service interruption through bd process termination

Published May 5, 2022 · Updated Sep 16, 2024

Denial of service in affected F5 BIG-IP Advanced WAF, ASM, and APM 13.1.x through 16.1.x releases allows remote attackers to terminate bd. F5 has not disclosed which requests reach the vulnerable control-flow path or why processing those requests terminates bd. Exposure requires ASM or Advanced WAF and APM on one virtual server, Session Awareness, and the Use APM Username and Session ID option; the published impact is availability loss only.

CVSS severity7.5
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected F5 BIG-IP Advanced WAF, ASM, and APM 13.1.x through 16.1.x releases allows remote attackers to terminate bd. F5 has not disclosed which requests reach the vulnerable control-flow path or why processing those requests terminates bd. Exposure requires ASM or Advanced WAF and APM on one virtual server, Session Awareness, and the Use APM Username and Session ID option; the published impact is availability loss only.

The record

CVE
CVE-2022-26890
Published
May 5, 2022
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-670, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
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-670Always-Incorrect Control Flow Implementation
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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