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Vulnerability details: VCID-vcfh-3p9e-4uc3
Vulnerability ID VCID-vcfh-3p9e-4uc3
Aliases CVE-2021-20240
Summary gdk-pixbuf: integer wraparound in the GIF loader of gdk-pixbuf via crafted input leads to segmentation fault
Status Published
Exploitability 0.5
Weighted Severity 7.3
Risk 3.6
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-191 Integer Underflow (Wrap or Wraparound)
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 8.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20240.json
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
epss 0.00794 https://api.first.org/data/v1/epss?cve=CVE-2021-20240
cvssv3.1 8.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20240.json
https://api.first.org/data/v1/epss?cve=CVE-2021-20240
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20240
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1926787 https://bugzilla.redhat.com/show_bug.cgi?id=1926787
USN-4743-1 https://usn.ubuntu.com/4743-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20240.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:H/PR:N/UI:N/S:U/C:H/I:H/A:H 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
Exploit Prediction Scoring System (EPSS)
Percentile 0.73884
EPSS Score 0.00794
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:03:29.376356+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20240.json 38.0.0