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Fencer Vulns
medium 5.5

CVE-2019-14274 json

MCPP 2.7.2 has a heap-based buffer overflow in the do_msg() function in support.c.

published 2019-07-26 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5505

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

MCPP 2.7.2 has a heap-based buffer overflow in the do_msg() function in support.c.

Patch / fix

  • mcpp Debian 14, Debian 13, Debian 12 2.7.2-5

debian advisories DEBIAN-CVE-2019-14274

  • mcpp Ubuntu 24.04 LTS, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS 2.7.2-5

ubuntu advisories UBUNTU-CVE-2019-14274

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

  • mcpp openSUSE Tumbleweed 2.7.2-24.8
  • mcpp Package Hub 15 SP1 2.7.2-bp151.4.3.1
  • mcpp openSUSE Leap 15.1 2.7.2-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:11044-1openSUSE-SU-2020:0391-1openSUSE-SU-2020:0382-1

  • mcpp Alpine 3.11, Alpine 3.10, Alpine 3.9 +1 more 2.7.2-r2

alpine advisories ALPINE-CVE-2019-14274

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

  • mcpp CBL-Mariner 2.0, Azure Linux 3.0 2.7.2-28

azure linux advisories AZL-34973AZL-6679

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2019-14274 updated cvss 5.3

mcpp: heap based buffer overflow in function do_msg() in support.c

  • Red Hat Enterprise Linux 6 mcpp, libmcpp
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 mcpp, libmcpp
    affected: no fix planned “Will not fix”

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

1.57% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/mcpp/bugs/13/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

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.