CVE-2026-41959

iControl and tmsh REST vulnerability

MEDIUM
6.5
CVSS Score
Published: May 13, 2026 at 02:12 PM UTC
Updated: June 27, 2026 at 11:41 AM UTC
23 products affected across 1 vendorBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) network diagnostics commands and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view the network status of destination systems. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0
16.1.0 ≤ v ≤ 16.1.617.1.0 ≤ v ≤ 17.1.317.5.0 ≤ v ≤ 17.5.121.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryPatchMitigation
Source: cverecord
https://my.f5.com/manage/s/article/K000161022

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMf5
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-732

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