CVE-2026-41954: F5 BIG-IP · Information Exposure
Affects F5 BIG-IPSource CVE Database V5
Not known to be exploited · CVSS 4.9 Medium · fixed in 21.0.0.1 : update F5 BIG-IP when convenient.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 21.0.0.1, 17.5.1.4, 17.1.3.1 +1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 13 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade BIG-IP to 21.0.0.1, 17.5.1.4 or 17.1.3.1; BIG-IQ to 8.4.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| F5BIG-IP | Affected
| Fixed in
|
| F5BIG-IQ | Affected
| Fixed in
|
AI-suggested
Restrict resource administrator role assignments to trusted personnel only and review access controls to limit exposure. No additional vendor-recommended mitigations are available at this time.
Description
Sensitive information disclosure vulnerability exists in the undisclosed iControl REST endpoint and TMOS Shell (tmsh) command which may allow an authenticated attacker with resource administrator role privileges to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.