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CVE-2017-10979

33
FAUCET Score

CVE-2017-10979 describes a critical write overflow vulnerability in FreeRADIUS 2.x versions prior to 2.2.10. This flaw, identified as FR-GV-202, allows unauthenticated remote attackers to trigger a denial of service by crashing the daemon or potentially execute arbitrary code. With a CVSS score of 9.8 (Critical), it presents a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation is confirmed, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.0CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.0.0:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.0.0:pre1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.0.0:pre2:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.0.1:*:*:*:*:*:*:*
2.0.2CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.0.2:*:*:*:*:*:*:*

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
7.04%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0704 is in the 89th percentile among its peer group of 36,833 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: freeradius-0:2.2.6-7.el6_9
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

Vendor Advisories (1)

redhatCVE-2017-10979Important

freeradius: Out-of-bounds write in rad_coalesce()

Jul 17, 2017

References

freeradius.org / security/fuzzer-2017.html
PatchVendor Advisory
access.redhat.com / errata/RHSA-2017:1759
debian.org / security/2017/dsa-3930
securityfocus.com / bid/99901
securitytracker.com / id/1038914
Third Party AdvisoryVDB Entry