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CVE-2021-25220

MEDIUM
Published 2022-03-23T12:50:10.367480Z
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CVSS Score

V3.1
6.8
/10
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.208
Higher than 20.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Description

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

ISC

BIND

Affected Versions:

Open Source Branch 9.11 9.11.0 through versions before 9.11.37 Development Branch 9.17 BIND 9.17 all version Open Source Branch 9.12-16 9.12.0 through versions before 9.16.27 Open Source Branch 9.18 9.18.0 Supported Preview Branch 9.11-S 9.11.0-S through versions before 9.11.37-S Supported Preview Branch 9.16-S 9.16.0-S through versions before 9.16.27-S

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-v8rf-mvwx-cx29

Advisory Details

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-25220
WEB https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
WEB https://kb.isc.org/v1/docs/cve-2021-25220
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY
WEB https://security.gentoo.org/glsa/202210-25
WEB https://security.netapp.com/advisory/ntap-20220408-0001
WEB https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US

Advisory provided by GitHub Security Advisory Database. Published: March 24, 2022, Modified: March 30, 2022

References

https://kb.isc.org/v1/docs/cve-2021-25220
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV/
https://security.netapp.com/advisory/ntap-20220408-0001/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ/
https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
https://security.gentoo.org/glsa/202210-25
https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US
Published: 2022-03-23T12:50:10.367480Z
Last Modified: 2024-09-16T17:08:54.143Z
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