BIG-IP
CVE-2023-41253: BIG-IP DNS TSIG Key vulnerability
When on BIG-IP DNS or BIG-IP LTM enabled with DNS Services License, and a TSIG key is created, it is logged in plaintext in the audit log.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 5.5
EPSS0.18%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| BIG-IP 17.1 | Not affected |
| BIG-IP 16.1 | 16.1.4 or later |
| BIG-IP 15.1 | 15.1.9 or later |
| BIG-IP 14.1 | * or later |
| BIG-IP 13.1 | * or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
When on BIG-IP DNS or BIG-IP LTM enabled with DNS Services License, and a TSIG key is created, it is logged in plaintext in the audit log. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.