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CVE-2023-41253

BIG-IP DNS TSIG Key vulnerability

MEDIUM
5.5
CVSS Score
Published: October 10, 2023 at 12:33 PM UTC
Updated: June 17, 2026 at 06:21 AM UTC
3 products affected across 1 vendorBig IP Local Traffic ManagerBig IP Domain Name SystemBIG-IP

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Big IP Domain Name System· F5
95%
13.1.0 ≤ v ≤ 14.1.515.1.0 ≤ v < 15.1.916.1.0 ≤ v < 16.1.4
Affected range stops below 15.1.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.1.4, so it looks safe — our inference, not a vendor statement
Big IP Local Traffic Manager· F5
95%
13.1.0 ≤ v ≤ 14.1.515.1.0 ≤ v < 15.1.916.1.0 ≤ v < 16.1.4
Affected range stops below 15.1.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.1.4, so it looks safe — our inference, not a vendor statement
BIG-IP· F5
60%
v ≥ 13.1.0v ≥ 14.1.015.1.0 ≤ v < 15.1.916.1.0 ≤ v < 16.1.413.1.014.1.015.1.016.1.0
Affected range stops below 15.1.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.1.4, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 17.1.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://my.f5.com/manage/s/article/K98334513

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMf5
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-532

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