CVE-2026-42924Network attack vector

Privilege escalation via SNMP object command injection

Published May 13, 2026 · Updated May 13, 2026

OS command injection in F5 BIG-IP allows remote authenticated users to escalate privileges through iControl SOAP SNMP object creation. F5 has not disclosed which SNMP field reaches an OS command or the faulty neutralization operation within the SOAP processing path. Exploitation requires an Administrator or Resource Administrator account and can cross the appliance-mode privilege boundary to read or modify protected data.

CVSS severity8.5
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in F5 BIG-IP allows remote authenticated users to escalate privileges through iControl SOAP SNMP object creation. F5 has not disclosed which SNMP field reaches an OS command or the faulty neutralization operation within the SOAP processing path. Exploitation requires an Administrator or Resource Administrator account and can cross the appliance-mode privilege boundary to read or modify protected data.

The record

CVE
CVE-2026-42924
Published
May 13, 2026
Updated
May 13, 2026
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-78, T1068
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record 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=16.1.0 <*
  2. Affected versionversion=17.1.0 <17.1.3.1
  3. Affected versionversion=17.5.0 <17.5.1.4
  4. Affected versionversion=21.0.0 <21.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

F5 Networks · BIG-IPversion=16.1.0 <*; version=17.1.0 <17.1.3.1; version=17.5.0 <17.5.1.4; version=21.0.0 <21.0.0.1

Published CVSS scores

8.5F5 NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.7F5 NetworksCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
6.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1068Exploitation for Privilege Escalation

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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