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CVE-2017-9148

32
FAUCET Score

CVE-2017-9148 describes an authentication bypass vulnerability in the TLS session cache of FreeRADIUS versions 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x before 2017-02-04, and 4.0.x before 2017-02-04. This critical flaw, with a CVSS score of 9.8, allows remote attackers to bypass authentication via PEAP or TTLS by reliably resuming unauthenticated sessions. While the vulnerability has a high FAUCET Risk Score of 80/100 and has received media coverage, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei. Community discussion is minimal, suggesting limited public awareness or active development of exploits.

Impacted Technologies

VendorProductVersion(s)CPE
2.1.1CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.1:*:*:*:*:*:*:*
2.1.2CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.2:*:*:*:*:*:*:*
2.1.3CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.3:*:*:*:*:*:*:*
2.1.4CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.4:*:*:*:*:*:*:*
2.1.6CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.91%
Probability of exploitation in next 30 days
EPSS Percentile
89.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0391 is in the 82nd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: freeradius-0:3.0.4-8.el7_3
View patch

Vendor Advisories (1)

redhatCVE-2017-9148Important

freeradius: TLS resumption authentication bypass

May 8, 2017

References

freeradius.org / security.html
Not Applicable
access.redhat.com / errata/RHSA-2017:1581
seclists.org / oss-sec/2017/q2/422
Mailing ListVDB Entry
security.gentoo.org / glsa/201706-27
securityfocus.com / bid/98734
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038576