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CVE-2015-4680

20
FAUCET Score

CVE-2015-4680 describes a critical vulnerability in FreeRADIUS versions 2.2.x before 2.2.8 and 3.0.x before 3.0.9, where the software fails to properly check the revocation status of intermediate Certificate Authority (CA) certificates. This flaw, rated 7.5 HIGH on the CVSS scale, allows an unauthenticated attacker to compromise data integrity over the network with low attack complexity. While the vulnerability has a high impact on integrity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:3.0.0:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:3.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 59th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: freeradius
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: freeradius2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: freeradius
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: freeradius

Vendor Advisories (1)

redhatCVE-2015-4680Moderate

freeradius: insufficent CRL application

Jun 22, 2015

References

lists.opensuse.org / opensuse-security-announce/2017-01/msg00010.html
Third Party Advisory
packetstormsecurity.com / files/132415/FreeRADIUS-Insufficient-CRL-Application.html
PatchThird Party AdvisoryVDB Entry
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
ocert.org / advisories/ocert-2015-008.html
PatchThird Party Advisory
securityfocus.com / archive/1/535810/100/0/threaded
securityfocus.com / bid/75327
Third Party AdvisoryVDB Entry
securitytracker.com / id/1032690
Third Party AdvisoryVDB Entry