CVE-2019-11235

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.

Published: 2019-04-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-11235 is rated High Risk (74.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 7.69%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.14% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-11235

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-09 4.55% 7.69% +3.14%
2 2026-05-09 3.40% 4.55% +1.15%
3 2026-03-22 — 3.40% —

Full EPSS history (54 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-11235

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2019-11235

OS Trackers for CVE-2019-11235

vendor priority summary link
alpine critical CVE-2019-11235: 1 source package rows (freeradius); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2019-11235
debian not yet assigned CVE-2019-11235 not yet assigned priority: Debian including 1 source packages (freeradius), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-11235
redhat high — https://access.redhat.com/security/cve/CVE-2019-11235
suse high CVE-2019-11235 severity important: SUSE including 164 source package names (freeradius-3.0.13-10.el7_6, freeradius-3.0.17-4.module+el8.0.0+3108+851cb559, …), 363 product×package rows across 44 product lines (SLES for SAP Applications 11 SP3, SUSE Enterprise Storage 4, … (44 product lines)): Fixed 334, Known Not Affected 29. https://www.suse.com/security/cve/CVE-2019-11235/
ubuntu medium CVE-2019-11235 medium priority: Ubuntu including 1 source packages (freeradius), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 3, DNE 1, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2019-11235

Affected software / configurations for CVE-2019-11235

Vendor Product Version Raw CPE
freeradius freeradius < 3.0.19 cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:*
fedoraproject fedora — cpe:2.3:o:fedoraproject:fedora:-:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

References for CVE-2019-11235

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.html Third 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-2019:1131 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1142
https://bugzilla.redhat.com/show_bug.cgi?id=1695748 Issue Tracking Patch Third Party Advisory
https://freeradius.org/release_notes/?br=3.0.x&re=3.0.19 Release Notes Vendor Advisory
https://freeradius.org/security/ Vendor Advisory
https://papers.mathyvanhoef.com/dragonblood.pdf Technical 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
cvelogic Threat Intelligence