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CVE-2019-11234· NVD / CVE Program· CNA mitre

FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2

Noroxi assessment

Priority: Plan (action score 41/100)

  • 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: 7.6% (FIRST EPSS); higher than 94.4% of all records.
  • Anyone who can reach it over the internet 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 (Alpine:v3.10) 3.0.19-r0; freeradius (Alpine:v3.6) 3.0.13-r3; freeradius (Alpine:v3.7) 3.0.15-r4.

Add it to your regular patch cycle. Upgrade to freeradius (Alpine:v3.10) 3.0.19-r0; freeradius (Alpine:v3.6) 3.0.13-r3; freeradius (Alpine:v3.7) 3.0.15-r4 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

FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2019-9497.

CriticalCVSS 9.8 · v3.0—No exploit Fix available
Published
Apr 22, 2019
Updated
Jun 16, 2026
EPSS
7.6% · 94th percentile

Report tools

JSON

Action score

41

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 7.6%

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-11234

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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
fedoraprojectfedora
redhatenterprise linux
canonicalubuntu linux

Affected versions

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

  • canonical ubuntu linux18.04
  • canonical ubuntu linux18.10
  • canonical ubuntu linux19.04
  • fedoraproject fedoraall versions
  • freeradius freeradiusbefore 3.0.19
  • redhat enterprise linux7.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.10freeradiusbefore 3.0.19-r03.0.19-r0
Alpine:v3.6freeradiusbefore 3.0.13-r33.0.13-r3
Alpine:v3.7freeradiusbefore 3.0.15-r43.0.15-r4
Alpine:v3.8freeradiusbefore 3.0.17-r33.0.17-r3
Alpine:v3.9freeradiusbefore 3.0.17-r53.0.17-r5
Debian:12freeradiusbefore 3.0.17+dfsg-1.13.0.17+dfsg-1.1
openSUSE:Leap 15.0freeradius-serverbefore 3.0.16-lp150.2.3.13.0.16-lp150.2.3.1
openSUSE:Leap 15.1freeradius-serverbefore 3.0.16-lp151.4.3.13.0.16-lp151.4.3.1
openSUSE:Tumbleweedfreeradius-serverbefore 3.0.23-1.53.0.23-1.5
Red Hat:enterprise_linux:7::serverfreeradiusbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-debuginfobefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-develbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-docbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-krb5before 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-ldapbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-mysqlbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-perlbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-postgresqlbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-pythonbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-sqlitebefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-unixODBCbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:7::serverfreeradius-utilsbefore 0:3.0.13-10.el7_60:3.0.13-10.el7_6
Red Hat:enterprise_linux:8::appstreamfreeradiusbefore 0:3.0.17-4.module+el8.0.0+3108+851cb5590:3.0.17-4.module+el8.0.0+3108+851cb559
Red Hat:enterprise_linux:8::appstreamfreeradius-debuginfobefore 0:3.0.17-4.module+el8.0.0+3108+851cb5590:3.0.17-4.module+el8.0.0+3108+851cb559

+24

Same product

freeradius: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2003-0968Stack-based buffer overflow in SMB_Logon_Server of the rlm_smb experimental module for FreeRADIUS 0.9.3 and earlier allows remote attackers
    41Plan
  • CVE-2024-3596RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.
    40Plan
  • CVE-2019-11235FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group e
    40Plan
  • CVE-2017-9148The TLS session cache in FreeRADIUS 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 fails to
    40Plan

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
alpine:freeradius3.0.19-r0 · Alpine:v3.10Package registry (OSV)
debian:freeradius3.0.17+dfsg-1.1 · Debian:12Package registry (OSV)
opensuse:freeradius-server3.0.16-lp150.2.3.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:freeradius0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-debuginfo0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-devel0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-doc0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-krb50:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-ldap0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-mysql0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-perl0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-postgresql0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-python0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-sqlite0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-unixODBC0:3.0.13-10.el7_6 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
suse:freeradius-server3.0.3-17.12.1 · SUSE:OpenStack Cloud 7Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

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

No commit or PR link among the references.

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).

Technical details

Attack conditions

  • Anyone who can reach it over the internet 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
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

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

Change log

  1. Fix✗ → ✓

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

References

Show all references (10 more)

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

All records