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Description

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can create SNMP configuration objects through iControl REST or the TMOS shell (tmsh) resulting in privilege escalation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-13 | Updated 2026-05-14 | Assigner f5




HIGH: 8.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Appliance Mode

HIGH: 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-77 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

Default status
unknown

21.1.0 (custom) before *
unaffected

21.0.0 (custom) before 21.0.0.2
affected

17.5.0 (custom) before 17.5.1.6
affected

17.1.0 (custom) before 17.1.3.2
affected

16.1.0 (custom) before *
affected

Default status
unaffected

8.4.0 (custom) before *
affected

Credits

F5 finder

References

my.f5.com/manage/s/article/K000160981 vendor-advisory patch

cve.org (CVE-2026-40698)

nvd.nist.gov (CVE-2026-40698)

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