HOME VULNERABILITIESCVE-2019-11235

CRITICAL

CVE-2019-11235

CWE-345Published: April 22, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group element is a valid point on the curve being used" protection mechanism, aka a "Dragonblood" issue, a similar issue to CVE-2019-9498 and CVE-2019-9499.

Technical Analysis

CVE-2019-11235 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Fedora1 product(s)

fedora

freeradius1 product(s)

freeradius

openSUSE1 product(s)

leap

Red Hat6 product(s)

enterprise linuxenterprise linux eusenterprise linux serverenterprise linux server ausenterprise linux server tusenterprise linux workstation

Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1695748

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1695748

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.html

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1131

ADVISORYhttps://freeradius.org/release_notes/?br=3.0.x&re=3.0.19

ADVISORYhttps://freeradius.org/security/

ADVISORYhttps://papers.mathyvanhoef.com/dragonblood.pdf

ADVISORYhttps://usn.ubuntu.com/3954-1/

ADVISORYhttps://www.kb.cert.org/vuls/id/871675/

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.html

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1131

ADVISORYhttps://freeradius.org/release_notes/?br=3.0.x&re=3.0.19

ADVISORYhttps://freeradius.org/security/

ADVISORYhttps://papers.mathyvanhoef.com/dragonblood.pdf

ADVISORYhttps://usn.ubuntu.com/3954-1/

ADVISORYhttps://www.kb.cert.org/vuls/id/871675/

All References (22)

→

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00032.html

→

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00033.html

→

https://access.redhat.com/errata/RHSA-2019:1131Third Party Advisory

→

https://access.redhat.com/errata/RHSA-2019:1142

→

https://bugzilla.redhat.com/show_bug.cgi?id=1695748Issue Tracking · Patch · Third Party Advisory

→

https://freeradius.org/release_notes/?br=3.0.x&re=3.0.19Release Notes · Vendor Advisory

→

https://freeradius.org/security/Vendor Advisory

→

https://papers.mathyvanhoef.com/dragonblood.pdfTechnical Description · Third Party Advisory

→

https://usn.ubuntu.com/3954-1/Third Party Advisory

→

https://www.kb.cert.org/vuls/id/871675/Not Applicable · Third Party Advisory · US Government Resource

→

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00032.html

→

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00033.html

→

https://access.redhat.com/errata/RHSA-2019:1131Third Party Advisory

Quick Facts

CVE IDCVE-2019-11235

CVSS Score9.8 / 10

SeverityCRITICAL

WeaknessCWE-345

CISA KEVNo

Affected5 vendor(s)

PublishedApr 22, 2019

Related CVEs (CWE-345)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2019-11235 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

← All Vulnerabilities·Search for CVE-2019-11235·NVD