What is CVE-2019-12450?

CVE-2019-12450 is a critical-severity vulnerability in GNOME Glib, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2019-05-29.

How severe is CVE-2019-12450?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-12450 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in GNOME Glib

CVE-2019-12450

file_copy_fallback in gio/gfile.c in GNOME GLib 2.15.0 through 2.61.1 does not properly restrict file permissions while a copy operation is in progress. Instead, default permissions are used.

Published 2019-05-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (85.4th percentile), scored 2026-10-25.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

GNOME Glib
Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
Debian Linux — versions 8.0
Fedoraproject Fedora — versions 30
openSUSE Leap — versions 15.0
Red Hat Enterprise Linux — versions 8.0
Red Hat Enterprise Linux Eus — versions 8.1, 8.2, 8.4
Red Hat Enterprise Linux Server Aus — versions 8.2, 8.4, 8.6
Red Hat Enterprise Linux Server Tus — versions 8.2, 8.4, 8.6

Weakness classification (CWE)

Public proof-of-concept exploits

marklogic/marklogic-docker

References

gitlab.gnome.org/GNOME/glib/commit/d8f8f4d637ce43f8699ba94c9b7648beda0ca174 (Patch, Vendor Advisory)
security.netapp.com/advisory/ntap-20190606-0003/ (Third Party Advisory)
usn.ubuntu.com/4014-1/ (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/4014-2/ (vendor-advisory, Third Party Advisory)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
lists.debian.org/debian-lts-announce/2019/06/msg00013.html (mailing-list, Mailing List, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2019-06/msg00076.html (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2019:3530 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2019-12450?: CVE-2019-12450 is a critical-severity vulnerability in GNOME Glib, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2019-05-29.
How severe is CVE-2019-12450?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-12450 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.