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NVD / CVE Program· CNA mitre

CVE-2019-13456: In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password element cannot be found within 10

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.7% (FIRST EPSS); higher than 78.4% of all records.
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: freeradius (Debian:12) 3.0.20+dfsg-1; freeradius-server (openSUSE:Leap 15.1) 3.0.16-lp151.4.4.1; freeradius-server (openSUSE:Tumbleweed) 3.0.23-1.5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to freeradius (Debian:12) 3.0.20+dfsg-1; freeradius-server (openSUSE:Leap 15.1) 3.0.16-lp151.4.4.1; freeradius-server (openSUSE:Tumbleweed) 3.0.23-1.5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password element cannot be found within 10 iterations of the hunting and pecking loop. This leaks information that an attacker can use to recover the password of any user. This information leakage is similar to the "Dragonblood" attack and CVE-2019-9494.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Dec 3, 2019
Updated
Jun 16, 2026
EPSS
1.7% · 78th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
freeradiusfreeradius
linuxlinux kernel
redhatenterprise linux
opensuseleap

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • freeradius freeradius3.0.0 and later · up to 3.0.19 inclusive
  • opensuse leap15.1
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12freeradiusbefore 3.0.20+dfsg-13.0.20+dfsg-1
openSUSE:Leap 15.1freeradius-serverbefore 3.0.16-lp151.4.4.13.0.16-lp151.4.4.1
openSUSE:Tumbleweedfreeradius-serverbefore 3.0.23-1.53.0.23-1.5
Red Hat:enterprise_linux:7::serverfreeradiusbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-debuginfobefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-develbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-docbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-krb5before 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-ldapbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-mysqlbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-perlbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-postgresqlbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-pythonbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-sqlitebefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-unixODBCbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:7::serverfreeradius-utilsbefore 0:3.0.13-15.el70:3.0.13-15.el7
Red Hat:enterprise_linux:8::appstreamfreeradiusbefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-debuginfobefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-debugsourcebefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-develbefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-docbefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-krb5before 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-krb5-debuginfobefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8
Red Hat:enterprise_linux:8::appstreamfreeradius-ldapbefore 0:3.0.17-7.module+el8.2.0+4847+336970e80:3.0.17-7.module+el8.2.0+4847+336970e8

+19

Same product

freeradius: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11234FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2
    41Plan
  • CVE-2017-10984An FR-GV-301 issue in FreeRADIUS 3.x before 3.0.15 allows "Write overflow in data2vp_wimax()" - this allows remote attackers to cause a deni
    41Plan
  • CVE-2017-10979An FR-GV-202 issue in FreeRADIUS 2.x before 2.2.10 allows "Write overflow in rad_coalesce()" - this allows remote attackers to cause a denia
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2019-11235Apr 22, 2019 · FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group e
    40Plan
  • ← EarlierCVE-2019-10143May 24, 2019 · It was discovered freeradius up to and including version 3.0.19 does not correctly configure logrotate, allowing a local attacker who alread
    28Monitor
  • Later →CVE-2019-17185Mar 20, 2020 · In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes.
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:freeradius3.0.20+dfsg-1 · Debian:12Package registry (OSV)
opensuse:freeradius-server3.0.16-lp151.4.4.1 · openSUSE:Leap 15.1Package registry (OSV)
red hat:freeradius0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-debuginfo0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-debugsource0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-devel0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-doc0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-krb50:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-krb5-debuginfo0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-ldap0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-ldap-debuginfo0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-mysql0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-mysql-debuginfo0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:freeradius-perl0:3.0.17-7.module+el8.2.0+4847+336970e8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
suse:freeradius-server3.0.15-2.14.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-203 · Observable Discrepancy

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records