CVE-2026-42937 | THREATINT

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.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-13 | Updated 2026-05-13 | Assigner f5

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

BIG-IP

HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

BIG-IP

MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

BIG-IQ

MEDIUM: 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

BIG-IQ

Problem types

CWE-732 Incorrect Permission Assignment for Critical Resource

Product status

Default status

unknown

21.1.0 (custom) before *

unaffected

21.0.0 (custom) before 21.0.0.2

affected

17.5.0 (custom) before 17.5.1.6

affected

17.1.0 (custom) before 17.1.3.2

affected

16.1.0 (custom) before *

affected

Default status

unknown

8.4.0 (custom) before *

affected

Credits

F5 finder

References

my.f5.com/manage/s/article/K000161018 vendor-advisory patch

cve.org (CVE-2026-42937)

nvd.nist.gov (CVE-2026-42937)

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