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CVE-2025-40778

33
FAUCET Score

CVE-2025-40778 is a high-severity cache poisoning vulnerability in BIND 9, affecting multiple versions across its 9.11, 9.18, 9.20, and 9.21 series. This flaw allows an attacker to inject forged data into the DNS cache due to BIND's overly lenient handling of answer records. With a CVSS score of 8.6 (HIGH), it presents a significant risk as it can be exploited remotely with low attack complexity, leading to high integrity impact without requiring user interaction. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
ISCBIND 9
>= 9.11.0, <= 9.16.50, >= 9.11.3-S1, <= 9.16.50-S1, >= 9.18.0, <= 9.18.39, >= 9.18.11-S1, <= 9.18.39-S1, >= 9.20.0, <= 9.20.13, >= 9.20.9-S1, <= 9.20.13-S1, >= 9.21.0, <= 9.21.12CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
48.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 24th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (53)

alistgopatch availablevia llm_extracted
Fixed in: 9.20.10
View patch
microsoftpatch availablevia msrc
Product: cbl2 bind 9.16.50-2 on CBL Mariner 2.0Fixed in: 9.16.50-3
microsoftpatch availablevia msrc
Product: 20589-17086Fixed in: 9.16.50-3
nessuspatch availablevia llm_extracted
Fixed in: 9.18.40-S1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: bind9.16-32:9.16.23-0.22.el8_10.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: bind-32:9.11.36-16.el8_10.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: bind-32:9.11.13-6.el8_2.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: bind-32:9.11.26-4.el8_4.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnFixed in: bind-32:9.11.26-4.el8_4.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: bind-32:9.11.36-3.el8_6.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: bind9.16-32:9.16.23-0.7.el8_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: bind-32:9.11.36-3.el8_6.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: bind9.16-32:9.16.23-0.7.el8_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: bind-32:9.11.36-3.el8_6.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: bind9.16-32:9.16.23-0.7.el8_6.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: bind-32:9.11.36-8.el8_8.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceFixed in: bind9.16-32:9.16.23-0.14.el8_8.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: bind-32:9.11.36-8.el8_8.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsFixed in: bind9.16-32:9.16.23-0.14.el8_8.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bind9.18-32:9.18.29-4.el9_6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bind-32:9.16.23-31.el9_6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bind-32:9.16.23-34.el9_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bind9.18-32:9.18.29-5.el9_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: bind-32:9.16.23-1.el9_0.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: bind-32:9.16.23-11.el9_2.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: bind-32:9.16.23-18.el9_4.10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.12Fixed in: rhcos-412.86.202601061735-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.13Fixed in: rhcos-413.92.202601130113-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.14Fixed in: rhcos-414.92.202601191325-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.15Fixed in: rhcos-415.92.202601271320-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.16Fixed in: rhcos-416.94.202601071926-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.17Fixed in: rhcos-417.94.202601120213-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.18Fixed in: rhcos-418.94.202601071817-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.19Fixed in: rhcos-4.19.9.6.202601130152-0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.20Fixed in: rhcos-4.20.9.6.202601052146-0
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-data-index-ephemeral-rhel8:1.36.0-11
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-data-index-postgresql-rhel8:1.36.0-11
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-db-migrator-tool-rhel8:1.36.0-11
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-jobs-service-ephemeral-rhel8:1.36.0-10
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-jobs-service-postgresql-rhel8:1.36.0-10
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-kn-workflow-cli-artifacts-rhel8:1.36.0-4
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-management-console-rhel8:1.36.0-9
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-operator-bundle:1.36.0-12
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-rhel8-operator:1.36.0-18
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-swf-builder-rhel8:1.36.0-11
View patch
redhatpatch availablevia redhat_api
Product: RHOSS-1.36-RHEL-8Fixed in: openshift-serverless-1/logic-swf-devmode-rhel8:1.36.0-7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: bind-32:9.18.33-4.el10_0.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Discovery 2Fixed in: discovery/discovery-ui-rhel9:sha256:310df392f638ef6eca1a26db024ae2cb617db5932f886d2acddc92fb7289e740
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: bind-32:9.18.33-10.el10_1.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONFixed in: bind-32:9.8.2-0.68.rc1.el6_10.17
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: bind-32:9.11.4-26.P2.el7_9.19
View patch
consensysvendor investigatingvia llm_extracted
View patch
grafanavendor investigatingvia llm_extracted
View patch

Vendor Advisories (6)

grafanallm-grafana-3bfe68bd8f94bc6dCRITICAL

HP ThinPro 8.1 SP9 Security Updates

Feb 2, 2026
redhatCVE-2025-40778Important

bind: Cache poisoning attacks with unsolicited RRs

Oct 22, 2025
microsoft2025-Oct/CVE-2025-40778Important

Cache poisoning attacks with unsolicited RRs

Oct 14, 2025
nessusllm-nessus-18b9f2c3d381a093
alistgollm-alistgo-c2667582da1cf74b

Cache poisoning attacks with unsolicited RRs

consensysllm-consensys-f5ec8b5addfccd13

References

gist.github.com / N3mes1s/f76b4a606308937b0806a5256bc1f918
openwall.com / lists/oss-security/2025/10/22/1
kb.isc.org / docs/cve-2025-40778