Vulnerability details
CVE-2026-40462
F5 BIG-IP
iControl REST and tmsh vulnerability
CVSS 4.0
7.1High
Official description
Incorrect permission assignment vulnerabilities exist in iControl REST and TMOS shell (tmsh) undisclosed command which may allow an authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (f5) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| 6.5Medium | 3.1 | CVEProject cvelistV5 (CNA) (f5) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| F5 | BIG-IP | 16.1.0 ≤ v | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.1.0 ≤ v < 17.1.3.1 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.5.0 ≤ v < 17.5.1.4 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 21.0.0 ≤ v < 21.0.0.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://my.f5.com/manage/s/article/K000156581 vendor-advisorypatch
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Details
- Published
- 2026-05-13
- Last updated
- 2026-05-13
- State
- Published
- Assigner (CNA)
- f5
Exploit prediction (EPSS)
0.24%
Probability of exploitation in 30 days
16.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-732Incorrect Permission Assignment for Critical Resource