CVE-2021-23015
Status: ModifiedHigh (7.2)—
On BIG-IP 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, 13.1.0.8 through 13.1.3.6, and all versions of 16.0.x, when running in Appliance Mode, an authenticated user assigned the 'Administrator' role may be able to bypass Appliance Mode restrictions utilizing undisclosed iControl REST endpoints. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Base score: 7.2
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.34%
- Percentile among all scored CVEs: 70
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (14)
F5 — Big-ip Access Policy ManagerF5 — Big-ip Advanced Firewall ManagerF5 — Big-ip Advanced WEB Application FirewallF5 — Big-ip AnalyticsF5 — Big-ip Application Acceleration ManagerF5 — Big-ip Application Security ManagerF5 — Big-ip Ddos Hybrid DefenderF5 — Big-ip Domain Name SystemF5 — Big-ip Fraud Protection ServiceF5 — Big-ip Global Traffic ManagerF5 — Big-ip Link ControllerF5 — Big-ip Local Traffic ManagerF5 — Big-ip Policy Enforcement ManagerF5 — Big-ip SSL Orchestrator
CWEs
- CWE-863
References
Raw JSON (NVD)
Show
{
"id": "CVE-2021-23015",
"cveTags": [],
"metrics": {
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"affected": [
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"source": "f5sirt@f5.com",
"affectedData": [
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"vendor": "n/a",
"product": "BIG-IP",
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"tags": [
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"lastModified": "2026-06-17T03:38:12.917",
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}