CVE-2021-27218: broadcom brocade_fabric_operating_system_firmware
CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2021-27218RHSA-2021:3058UBUNTU-CVE-2021-27218DEBIAN-CVE-2021-27218
Published 15-02-2021Last modified 14-10-2026
Vulnerability summary
CVE-2021-27218 is a high (CVSS 7.5) vulnerability in broadcom brocade_fabric_operating_system_firmware. EPSS estimates a 4.08% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
4.08%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 5Timeline
- 15-02-2021PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 5 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 5 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
4.08%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.08% on 18-09-2026
18-09-202618-10-2026
EPSS score4.08%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat11 products
- glib2< 0:2.56.4-10.el8_4.1
- glib2-debuginfo< 0:2.56.4-10.el8_4.1
- glib2-debugsource< 0:2.56.4-10.el8_4.1
- glib2-devel< 0:2.56.4-10.el8_4.1
- glib2-devel-debuginfo< 0:2.56.4-10.el8_4.1
Netapp3 products
Debian2 products
- glib2.0< 2.66.7-1
- debian_linuxEOL9.0
Alpine1 product
- glib≥ 2.67.0, < 2.66.7-r0
Broadcom1 product
Fedoraproject1 product
- fedoraEOL33 | 34
Gnome1 product
- glib< 2.66.7 | ≥ 2.67.0, < 2.67.4
Ubuntu1 product
- glib2.0All versions (No fix recorded) | < 2.48.2-0ubuntu4.7 | < 2.56.4-0ubuntu0.18.04.7 | < 2.64.6-1~ubuntu20.04.2
8 vendors · 21 products
References
22 links
lists.debian.org/debian-lts-announce/2022/06/msg00006.htmlMailing ListX Refsource MLISTThird Party Advisory
