CVE•Published 2026-05-13•Modified 2026-06-29•1 article on news•4 live references•NVD data

CVE-2026-40061F5 · Big-ip_domain_name_system

Vulnerability data via NVD (ingested)

CVSS v3.1

8.7

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 86% of all CVEs

Weaknesses (CWE)

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')

Description

When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command that may allow an authenticated attacker with the Resource Administrator or Administrator role to execute arbitrary system commands with higher privileges. In Appliance mode deployments, a successful exploit can allow the attacker to cross a security boundary. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Timeline

Published 2026-05-13

Modified 2026-06-29

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-40061

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"F5 Big-ip Domain Name System"

All exposed F5 Big-ip Domain Name System instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Big-ip Domain Name System"

HTTP body or banner mentions "Big-ip Domain Name System" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-40061