CVE-2017-6144

7.4 highEPSS 0.6%

In F5 BIG-IP PEM 12.1.0 through 12.1.2 when downloading the Type Allocation Code (TAC) database file via HTTPS, the server's certificate is not verified. Attackers in a privileged network position may be able to launch a man-in-the-middle attack against these connections. TAC databases are used in BIG-IP PEM for Device Type and OS (DTOS) and Tethering detection. Customers not using BIG-IP PEM, not configuring downloads of TAC database files, or not using HTTP for that download are not affected.

Severity

CVSS 3.0

7.4 high

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2017-10-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:big-ip_policy_enforcement_manager

References

https://support.f5.com/csp/article/K81601350
https://support.f5.com/csp/article/K81601350

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