CVE-2019-12816

Modules.cpp in ZNC before 1.7.4-rc1 allows remote authenticated non-admin users to escalate privileges and execute arbitrary code by loading a module with a crafted name.

Published: 2019-06-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-12816 is rated High Risk (67.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.68%). EPSS rose +1.06% 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-2019-12816

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 2026-06-02 2.62% 3.68% +1.06%
2 2026-05-16 2.71% 2.62% -0.09%
3 2025-11-21 — 2.71% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12816

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2019-12816

OS Trackers for CVE-2019-12816

vendor priority summary link
alpine high CVE-2019-12816: 1 source package rows (znc); 11 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 4. https://security.alpinelinux.org/vuln/CVE-2019-12816
debian not yet assigned CVE-2019-12816 not yet assigned priority: Debian including 1 source packages (znc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-12816
gentoo normal CVE-2019-12816: 1 GLSA(s) (201908-15), 1 atom(s) (net-irc/znc); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-12816
ubuntu medium CVE-2019-12816 medium priority: Ubuntu including 1 source packages (znc), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 6. https://ubuntu.com/security/CVE-2019-12816

Affected software / configurations for CVE-2019-12816

Vendor Product Version Raw CPE
znc znc <= 1.7.3 cpe:2.3:a:znc:znc:*:*:*:*:*:*:*:*

References for CVE-2019-12816

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00037.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00018.html
https://github.com/znc/znc/commit/8de9e376ce531fe7f3c8b0aa4876d15b479b7311 Patch Third Party Advisory
https://github.com/znc/znc/compare/be1b6bc...d1997d6 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00017.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4O24TQOB73X57GACLZVMRVUK4UKHLE5G/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NHR6OD52FQAG5ZPZ42NJM2T765C3V2XC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEESIGRNFLZUWXZPDGXAZ7JZTHYBDJ7G/
https://seclists.org/bugtraq/2019/Jun/23 Third Party Advisory
https://security.gentoo.org/glsa/201908-15
https://usn.ubuntu.com/4044-1/
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