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Vulnerability details: VCID-qksf-ukbf-f7ed
Vulnerability ID VCID-qksf-ukbf-f7ed
Aliases CVE-2021-27218
Summary An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-681 Incorrect Conversion between Numeric Types
CWE-190 Integer Overflow or Wraparound
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-27218.json
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03262 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03421 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03421 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03421 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.03421 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
epss 0.04301 https://api.first.org/data/v1/epss?cve=CVE-2021-27218
cvssv3.1 5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-27218
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-27218
archlinux Medium https://security.archlinux.org/AVG-1575
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-27218.json
https://api.first.org/data/v1/epss?cve=CVE-2021-27218
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27218
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1942
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944
https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2REA7RVKN7ZHRLJOEGBRQKJIPZQPAELZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJMPNDO4GDVURYQFYKFOWY5HAF4FTEPN/
https://security.gentoo.org/glsa/202107-13
https://security.netapp.com/advisory/ntap-20210319-0004/
1929847 https://bugzilla.redhat.com/show_bug.cgi?id=1929847
982779 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982779
AVG-1575 https://security.archlinux.org/AVG-1575
cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-27218 https://nvd.nist.gov/vuln/detail/CVE-2021-27218
RHSA-2021:3058 https://access.redhat.com/errata/RHSA-2021:3058
RHSA-2021:4526 https://access.redhat.com/errata/RHSA-2021:4526
USN-4759-1 https://usn.ubuntu.com/4759-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-27218.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-27218
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-27218
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.86662
EPSS Score 0.03262
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:28.219304+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4759-1/ 37.0.0