CVE-2026-39459
published 2026-05-13CVE-2026-39459: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can create…
PriorityP348high7.2CVSS 3.1
AVNACLPRHUINSUCHIHAH
EPSS
0.26%
17.3th percentile
A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can create configuration objects that allow running arbitrary commands.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected
89 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| f5 | big-ip | >= 16.1.0 < * | * |
| f5 | big-ip | >= 17.1.0 < 17.1.3.2 | 17.1.3.2 |
| f5 | big-ip | >= 17.5.0 < 17.5.1.6 | 17.5.1.6 |
| f5 | big-ip | >= 21.0.0 < 21.0.0.2 | 21.0.0.2 |
| f5 | big-ip_access_policy_manager | — | — |
| f5 | big-ip_access_policy_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_access_policy_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_access_policy_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_firewall_manager | — | — |
| f5 | big-ip_advanced_firewall_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_advanced_firewall_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_advanced_firewall_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_web_application_firewall | — | — |
| f5 | big-ip_advanced_web_application_firewall | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_advanced_web_application_firewall | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_advanced_web_application_firewall | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_analytics | — | — |
| f5 | big-ip_analytics | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_analytics | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_analytics | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_application_acceleration_manager | — | — |
| f5 | big-ip_application_acceleration_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_application_acceleration_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_application_acceleration_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_application_security_manager | — | — |
CVSS provenance
nvdv3.17.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.6HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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F5
CVE-2026-39459: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker w...
vendor_f5·2026-05-13·CVSS 8.6
CVE-2026-39459 [HIGH] CWE-272 CVE-2026-39459: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker w...
CVE-2026-39459: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker w...
A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can create configuration objects that allow running arbitrary commands.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Products: iControl REST
F5 Advisory Articles: K000160863
F5 References: https://my.f5.com/manage/s/article/K000160863
GHSA
GHSA-pwjh-hfqc-xgc7: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can
ghsa_unreviewed·2026-05-13
CVE-2026-39459 [HIGH] CWE-272 GHSA-pwjh-hfqc-xgc7: A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can
A vulnerability exists in iControl REST and the TMOS Shell (tmsh) where a highly privileged, authenticated attacker with at least the Manager role can create configuration objects that allow running arbitrary commands.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
VulDB
F5 BIG-IP prior 17.1.3.2/17.5.1.6/21.0.0.2 iControl REST/TMOS Shell least privilege violation (K000160863)
vuldb·2026-05-13·CVSS 8.6
CVE-2026-39459 [HIGH] F5 BIG-IP prior 17.1.3.2/17.5.1.6/21.0.0.2 iControl REST/TMOS Shell least privilege violation (K000160863)
A vulnerability marked as critical has been reported in F5 BIG-IP. Affected by this vulnerability is an unknown functionality of the component iControl REST/TMOS Shell. The manipulation leads to least privilege violation.
This vulnerability is referenced as CVE-2026-39459. Remote exploitation of the attack is possible. No exploit is available.
It is suggested to upgrade the affected component.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-13
Published