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CVE-2025-40780

33
FAUCET Score

CVE-2025-40780 describes a high-severity weakness in BIND's Pseudo Random Number Generator (PRNG) that allows attackers to predict source ports and query IDs. This vulnerability impacts numerous BIND 9 versions, specifically 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, and their extended support releases. With a CVSS score of 8.6, it presents a critical risk due to its network-based attack vector, low attack complexity, and high potential for integrity impact, likely leading to cache poisoning. While there is no evidence of 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
>= 9.16.0, <= 9.16.50, >= 9.16.8-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
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 16th 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 (31)

alistgopatch availablevia llm_extracted
Fixed in: 9.20.13
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
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: 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: 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: 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: 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 Enterprise Linux 10Fixed in: bind-32:9.18.33-4.el10_0.2
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: Red Hat Discovery 2Fixed in: discovery/discovery-ui-rhel9:sha256:310df392f638ef6eca1a26db024ae2cb617db5932f886d2acddc92fb7289e740
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 Enterprise Linux 10Fixed in: bind-32:9.18.33-10.el10_1.2
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
consensysvendor investigatingvia llm_extracted
View patch
grafanavendor investigatingvia llm_extracted
View patch
nessusvendor investigatingvia llm_extracted
View patch

Vendor Advisories (6)

grafanallm-grafana-3bfe68bd8f94bc6dCRITICAL

HP ThinPro 8.1 SP9 Security Updates

Feb 2, 2026
redhatCVE-2025-40780Important

bind: Cache poisoning due to weak PRNG

Oct 22, 2025
microsoft2025-Oct/CVE-2025-40780Important

Cache poisoning due to weak PRNG

Oct 14, 2025
nessusllm-nessus-6a67dc37f5c1bcd3
alistgollm-alistgo-6b5d204a83b91731

Cache poisoning due to weak PRNG

consensysllm-consensys-25b31605fd425b8f

References

openwall.com / lists/oss-security/2025/10/22/1
kb.isc.org / docs/cve-2025-40780