Vulnerability details
CVE-2026-42937
F5 BIG-IPF5 BIG-IQ
iControl REST and tmsh vulnerability
CVSS 4.0
7.1High
Official description
Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view adjacent network 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 < 17.1.3.2 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.5.0 ≤ v < 17.5.1.6 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 21.0.0 ≤ v < 21.0.0.2 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IQ | 8.4.0 ≤ v | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://my.f5.com/manage/s/article/K000161018 vendor-advisorypatch
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Details
- Published
- 2026-05-13
- Last updated
- 2026-05-13
- State
- Published
- Assigner (CNA)
- f5
Exploit prediction (EPSS)
0.2%
Probability of exploitation in 30 days
10.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-732Incorrect Permission Assignment for Critical Resource