CVE-2019-12046 [Critical] | Security Vulnerability in Lemonldap::ng

CVE-2019-12046 is rated High Exploit Risk (79.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.93%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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Kind

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Link

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Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-01-16	1.74%	0.93%	-0.82%
2	2025-03-30	3.51%	1.74%	-1.77%
3	2025-03-29	—	3.51%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-01-16

1.74%

0.93%

-0.82%

2025-03-30

3.51%

1.74%

-1.77%

2025-03-29

—

3.51%

—

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]

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]

OS Trackers for CVE-2019-12046

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2019-12046 not yet assigned priority: Debian including 1 source packages (lemonldap-ng), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2019-12046
`ubuntu`	medium	CVE-2019-12046 medium priority: Ubuntu including 1 source packages (lemonldap-ng), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 7, not-affected 6, needs-triage 4, DNE 1, released 1.	https://ubuntu.com/security/CVE-2019-12046

Affected software / configurations for CVE-2019-12046

Vendor	Product	Version	Raw CPE
lemonldap-ng	lemonldap::ng	2.0.3	cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng:2.0.3:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*

References for CVE-2019-12046

URL	Tags
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/commits/master	Third Party Advisory
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1742	Exploit Third Party Advisory
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1743	Third Party Advisory
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1744	Third Party Advisory
https://lemonldap-ng.org/download	Product Vendor Advisory
https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-1-9-19-is-out/	Release Notes Third Party Advisory
https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-4-is-out/	Release Notes Third Party Advisory
https://seclists.org/bugtraq/2019/May/38	Mailing List Third Party Advisory

URL

CVE-2019-12046

Public exploit references (Exploit-DB) for CVE-2019-12046

Exploit prediction scoring system (EPSS) score for CVE-2019-12046

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12046

Weakness enumeration for CVE-2019-12046

OS Trackers for CVE-2019-12046

Affected software / configurations for CVE-2019-12046

References for CVE-2019-12046