CVE-2026-41217 PUBLISHED

BIG-IP tmsh vulnerability

Assigner: f5
Reserved: 30.04.2026 Published: 13.05.2026 Updated: 13.05.2026

A vulnerability exists in an undisclosed BIG-IP TMOS Shell (tmsh) command that may allow an authenticated attacker with resource administrator or administrator role to execute arbitrary system commands with higher privileges. In Appliance mode deployments, a successful exploit can allow the attacker to cross a security boundary.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 6

Standard Deployment

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	None

Standard Deployment

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.3

Standard and Appliance Mode Deployment

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	High
User Interaction	None

Standard and Appliance Mode Deployment

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CVSS Score: 7.9

Appliance Mode

Attack Vector	Local	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	None

Appliance Mode

CVSS 3.1

Product Status

Vendor	F5
Product	BIG-IP
Versions	Default: unknown unaffected from 21.1.0 to * (excl.) affected from 21.0.0 to 21.0.0.2 (excl.) affected from 17.5.0 to 17.5.1.6 (excl.) affected from 17.1.0 to 17.1.3.2 (excl.) affected from 16.1.0 to * (excl.)

Credits

F5 finder

References

https://my.f5.com/manage/s/article/K000161107

Problem Types

CWE-732 Incorrect Permission Assignment for Critical Resource CWE