CVE-2026-42937
published 2026-05-13CVE-2026-42937: 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…
PriorityP339medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
EPSS
0.20%
10.3th percentile
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.
Affected
7 ranges
| 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-iq | — | — |
| f5 | big-iq | >= 8.4.0 < * | * |
| f5 | icontrol_rest | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-6r7x-m6rv-m3fh: Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl REST
ghsa_unreviewed·2026-05-13
CVE-2026-42937 [HIGH] CWE-732 GHSA-6r7x-m6rv-m3fh: Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl REST
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.
VulDB
F5 BIG-IP/BIG-IQ iControl REST permission assignment (K000161018)
vuldb·2026-05-13·CVSS 7.1
CVE-2026-42937 [HIGH] F5 BIG-IP/BIG-IQ iControl REST permission assignment (K000161018)
A vulnerability was found in F5 BIG-IP and BIG-IQ. It has been declared as problematic. This impacts an unknown function of the component iControl REST Handler. Such manipulation leads to incorrect permission assignment.
This vulnerability is traded as CVE-2026-42937. An attack has to be approached locally. There is no exploit available.
It is recommended to upgrade the affected component.
F5
CVE-2026-42937: Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, an...
vendor_f5·2026-05-13·CVSS 7.1
CVE-2026-42937 [HIGH] CWE-732 CVE-2026-42937: Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, an...
CVE-2026-42937: Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, an...
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.
Affected Products: BIG-IQ, iControl REST
F5 Advisory Articles: K000161018
F5 References: https://my.f5.com/manage/s/article/K000161018
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-13
Published