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Vulnerability details: VCID-yv6x-218b-xkem
Vulnerability ID VCID-yv6x-218b-xkem
Aliases CVE-2021-20176
Summary A divide-by-zero flaw was found in ImageMagick 6.9.11-57 and 7.0.10-57 in gem.c. This flaw allows an attacker who submits a crafted file that is processed by ImageMagick to trigger undefined behavior through a division by zero. The highest threat from this vulnerability is to system availability.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-369 Divide By Zero
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20176.json
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2021-20176
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-20176
cvssv3.1 5.5 https://nvd.nist.gov/vuln/detail/CVE-2021-20176
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20176.json
https://api.first.org/data/v1/epss?cve=CVE-2021-20176
https://bugzilla.redhat.com/show_bug.cgi?id=1916610
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20176
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html
cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
CVE-2021-20176 https://nvd.nist.gov/vuln/detail/CVE-2021-20176
USN-4988-1 https://usn.ubuntu.com/4988-1/
USN-5335-1 https://usn.ubuntu.com/5335-1/
USN-7164-1 https://usn.ubuntu.com/7164-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20176.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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L 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:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-20176
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:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-20176
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 0.21071
EPSS Score 0.00067
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:34:28.512264+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4988-1/ 37.0.0