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CVE-2017-6143

19
FAUCET Score

CVE-2017-6143 describes an improper X.509 certificate validation vulnerability in F5 BIG-IP versions 12.0.0-12.1.2, 11.6.0-11.6.2, and 11.5.0-11.5.5, specifically affecting the IP Intelligence Subscription and feed-list features. This medium-severity vulnerability (CVSS 5.4) allows an unauthenticated attacker to compromise the confidentiality and integrity of data by impersonating the remote server due to insufficient identity validation, though a high attack complexity is required. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.5.1, <= 11.5.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
>= 11.6.1, <= 11.6.2CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
>= 12.1.0, <= 12.1.2CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
>= 11.5.1, <= 11.5.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
>= 11.6.1, <= 11.6.2CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 4th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.f5.com / csp/article/K11464209
Vendor Advisory