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Fencer Vulns
high 8.8

CVE-2019-12816 json

Modules.cpp in ZNC before 1.7.4-rc1 allows remote authenticated non-admin users to escalate privileges and execute arbitrary code by loadin…

published 2019-06-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-4397

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • znc Debian 14, Debian 13, Debian 12 1.7.2-3

debian advisories DEBIAN-CVE-2019-12816

  • znc Ubuntu 16.04 LTS 1.6.3-1ubuntu0.2
  • znc Ubuntu 18.04 LTS 1.6.6-1ubuntu0.2
  • znc Ubuntu Pro 14.04 LTS 1.2-3ubuntu0.1+esm1

ubuntu advisories UBUNTU-CVE-2019-12816

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • znc openSUSE Tumbleweed 1.8.2-1.11
  • znc Package Hub 15 SP1 1.7.4-bp151.4.3.1
  • znc Package Hub 15, openSUSE Leap 15.1, openSUSE Leap 15.0 1.7.4-bp150.2.6.1

opensuse advisories openSUSE-SU-2024:11542-1openSUSE-SU-2019:1859-1openSUSE-SU-2019:1775-1

  • znc Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 1.7.4-r0
  • znc Alpine 3.8, Alpine 3.7 1.7.1-r1
  • znc Alpine 3.9 1.7.1-r4

alpine advisories ALPINE-CVE-2019-12816

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12816 updated cvss 7.3

znc: invalid encoding leading to remote code execution

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.05% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.