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Vulnerability details: VCID-rd8n-tcus-zyg3
Vulnerability ID VCID-rd8n-tcus-zyg3
Aliases CVE-2021-25216
Summary bind: Vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-131 Incorrect Calculation of Buffer Size
System Score Found at
cvssv3 8.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25216.json
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
epss 0.27744 https://api.first.org/data/v1/epss?cve=CVE-2021-25216
cvssv3.1 8.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
archlinux High https://security.archlinux.org/AVG-1890
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25216.json
https://api.first.org/data/v1/epss?cve=CVE-2021-25216
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25214
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25215
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25216
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1953872 https://bugzilla.redhat.com/show_bug.cgi?id=1953872
987743 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987743
ASA-202104-10 https://security.archlinux.org/ASA-202104-10
AVG-1890 https://security.archlinux.org/AVG-1890
USN-4929-1 https://usn.ubuntu.com/4929-1/
USN-7739-1 https://usn.ubuntu.com/7739-1/
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-2021-25216.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 0.96416
EPSS Score 0.27744
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:02:23.400518+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-25216.json 38.0.0