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TI-2025-27242 Aliases CVE-2025-40780GHSA-j3w4-m6qj-vmm5

Cache poisoning due to weak PRNG

Priority MEDIUM 44CWE-341Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00466 40th percentileScored 2026-11-07
Fix Fixed Red Hat: 23 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ISCBIND 99.16.0 – 9.16.50; 9.18.0 – 9.18.39; 9.20.0 – 9.20.13; 9.21.0 – 9.21.12; 9.16.8-S1 – 9.16.50-S1; 9.18.11-S1 – 9.18.39-S1; 9.20.9-S1 – 9.20.13-S1—No fix listedCNA
  • BIND 9 VendorISC Affected 9.16.0 – 9.16.50; 9.18.0 – 9.18.39; 9.20.0 – 9.20.13; 9.21.0 – 9.21.12; 9.16.8-S1 – 9.16.50-S1; 9.18.11-S1 – 9.18.39-S1; 9.20.9-S1 – 9.20.13-S1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*——ISC
  • cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* Versions — — ·ISC

Remediation

Red Hat 23 advisories

  • RHSA-2026:6935 Released 2026-04-07 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images bind-9.18.48-1.hum1@aarch64, bind-9.18.48-1.hum1@src, bind-9.18.48-1.hum1@x86_64 +12
  • RHSA-2026:1541 Released 2026-02-05 · Red Hat rating Important
    OpenShift Container Platform 4.15.61 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 rhcos-aarch64-415.92.202601271320-0, rhcos-ppc64le-415.92.202601271320-0, rhcos-s390x-415.92.202601271320-0 +1
  • RHSA-2026:0996 Released 2026-01-30 · Red Hat rating Important
    OpenShift Container Platform 4.14.61 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 rhcos-aarch64-414.92.202601191325-0, rhcos-ppc64le-414.92.202601191325-0, rhcos-s390x-414.92.202601191325-0 +1
Show 20 more Red Hat advisories
  • RHSA-2026:0674 Released 2026-01-22 · Red Hat rating Important
    OpenShift Container Platform 4.19.22 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202601130152-0, rhcos-ppc64le-4.19.9.6.202601130152-0, rhcos-s390x-4.19.9.6.202601130152-0 +1
  • RHSA-2026:0677 Released 2026-01-22 · Red Hat rating Important
    OpenShift Container Platform 4.13.63 bug fix and security update
    • Red Hat OpenShift Container Platform 4.13 rhcos-x86_64-413.92.202601130113-0
  • RHSA-2026:0702 Released 2026-01-22 · Red Hat rating Important
    OpenShift Container Platform 4.17.47 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202601120213-0, rhcos-ppc64le-417.94.202601120213-0, rhcos-s390x-417.94.202601120213-0 +1
  • RHSA-2026:0332 Released 2026-01-15 · Red Hat rating Important
    OpenShift Container Platform 4.18.31 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202601071817-0, rhcos-ppc64le-418.94.202601071817-0, rhcos-s390x-418.94.202601071817-0 +1
  • RHSA-2026:0326 Released 2026-01-15 · Red Hat rating Important
    OpenShift Container Platform 4.16.55 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202601071926-0, rhcos-ppc64le-416.94.202601071926-0, rhcos-s390x-416.94.202601071926-0 +1
  • RHSA-2026:0316 Released 2026-01-15 · Red Hat rating Important
    OpenShift Container Platform 4.12.84 bug fix and security update
    • Red Hat OpenShift Container Platform 4.12 rhcos-x86_64-412.86.202601061735-0
  • RHSA-2026:0420 Released 2026-01-14 · Red Hat rating Important
    OpenShift Container Platform 4.20.10 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 rhcos-aarch64-4.20.9.6.202601052146-0, rhcos-ppc64le-4.20.9.6.202601052146-0, rhcos-s390x-4.20.9.6.202601052146-0 +1
  • RHSA-2025:22168 Released 2025-11-26 · Red Hat rating Important
    bind9.16 security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2
  • RHSA-2025:21994 Released 2025-11-24 · Red Hat rating Important
    A Subscription Management tool for finding and reporting Red Hat product usage
    • Red Hat Discovery 2 registry.redhat.io/discovery/discovery-server-rhel9, registry.redhat.io/discovery/discovery-ui-rhel9
  • RHSA-2025:21939 Released 2025-11-24 · Red Hat rating Important
    bind9.16 security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) bind9.16-32:9.16.23-0.14.el8_8.7, bind9.16-chroot-32:9.16.23-0.14.el8_8.7, bind9.16-dnssec-utils-32:9.16.23-0.14.el8_8.7 +4
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) bind9.16-32:9.16.23-0.14.el8_8.7, bind9.16-chroot-32:9.16.23-0.14.el8_8.7, bind9.16-dnssec-utils-32:9.16.23-0.14.el8_8.7 +4
  • RHSA-2025:21889 Released 2025-11-20 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) bind-32:9.16.23-1.el9_0.11, bind-chroot-32:9.16.23-1.el9_0.11, bind-dnssec-doc-32:9.16.23-1.el9_0.11 +5
  • RHSA-2025:21887 Released 2025-11-20 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) bind-32:9.16.23-11.el9_2.9, bind-chroot-32:9.16.23-11.el9_2.9, bind-dnssec-doc-32:9.16.23-11.el9_2.9 +5
  • RHSA-2025:21817 Released 2025-11-20 · Red Hat rating Important
    bind security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) bind-devel-32:9.16.23-18.el9_4.10, bind-doc-32:9.16.23-18.el9_4.10, bind-libs-32:9.16.23-18.el9_4.10
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) bind-32:9.16.23-18.el9_4.10, bind-chroot-32:9.16.23-18.el9_4.10, bind-dnssec-doc-32:9.16.23-18.el9_4.10 +5
  • RHSA-2025:21110 Released 2025-11-12 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 9) bind-32:9.16.23-34.el9_7.1, bind-chroot-32:9.16.23-34.el9_7.1, bind-dnssec-doc-32:9.16.23-34.el9_7.1 +5
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) bind-devel-32:9.16.23-34.el9_7.1, bind-doc-32:9.16.23-34.el9_7.1, bind-libs-32:9.16.23-34.el9_7.1
  • RHSA-2025:21111 Released 2025-11-12 · Red Hat rating Important
    bind9.18 security update
    • Red Hat Enterprise Linux AppStream (v. 9) bind9.18-32:9.18.29-5.el9_7.2, bind9.18-chroot-32:9.18.29-5.el9_7.2, bind9.18-dnssec-utils-32:9.18.29-5.el9_7.2 +2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) bind9.18-devel-32:9.18.29-5.el9_7.2, bind9.18-doc-32:9.18.29-5.el9_7.2, bind9.18-libs-32:9.18.29-5.el9_7.2
  • RHSA-2025:21034 Released 2025-11-11 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 10) bind-32:9.18.33-10.el10_1.2, bind-chroot-32:9.18.33-10.el10_1.2, bind-dnssec-utils-32:9.18.33-10.el10_1.2 +3
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) bind-devel-32:9.18.33-10.el10_1.2, bind-doc-32:9.18.33-10.el10_1.2
  • RHSA-2025:19951 Released 2025-11-10 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 9) bind-32:9.16.23-31.el9_6.2, bind-chroot-32:9.16.23-31.el9_6.2, bind-dnssec-doc-32:9.16.23-31.el9_6.2 +5
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) bind-devel-32:9.16.23-31.el9_6.2, bind-doc-32:9.16.23-31.el9_6.2, bind-libs-32:9.16.23-31.el9_6.2
  • RHSA-2025:19950 Released 2025-11-10 · Red Hat rating Important
    bind9.18 security update
    • Red Hat Enterprise Linux AppStream (v. 9) bind9.18-32:9.18.29-4.el9_6.2, bind9.18-chroot-32:9.18.29-4.el9_6.2, bind9.18-dnssec-utils-32:9.18.29-4.el9_6.2 +2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) bind9.18-devel-32:9.18.29-4.el9_6.2, bind9.18-doc-32:9.18.29-4.el9_6.2, bind9.18-libs-32:9.18.29-4.el9_6.2
  • RHSA-2025:19912 Released 2025-11-06 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 10) bind-32:9.18.33-4.el10_0.2, bind-chroot-32:9.18.33-4.el10_0.2, bind-dnssec-utils-32:9.18.33-4.el10_0.2 +3
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) bind-devel-32:9.18.33-4.el10_0.2, bind-doc-32:9.18.33-4.el10_0.2
  • RHSA-2025:19793 Released 2025-11-05 · Red Hat rating Important
    bind9.16 security update
    • Red Hat Enterprise Linux AppStream (v. 8) bind9.16-32:9.16.23-0.22.el8_10.4, bind9.16-chroot-32:9.16.23-0.22.el8_10.4, bind9.16-dnssec-utils-32:9.16.23-0.22.el8_10.4 +4
    • Red Hat Enterprise Linux CRB (v. 8) bind9.16-devel-32:9.16.23-0.22.el8_10.4, bind9.16-doc-32:9.16.23-0.22.el8_10.4, bind9.16-libs-32:9.16.23-0.22.el8_10.4

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:21817
Red Hat Discovery 2Fixed RHSA-2025:21994
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:19912, RHSA-2025:21034
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:19793
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:19950, RHSA-2025:19951, RHSA-2025:21110, RHSA-2025:21111
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2025:22168
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2025:22168
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2025:21939
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:21889
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:21887
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:21817
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2025:22168
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2025:21939
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2025:19793
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:19912, RHSA-2025:21034
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:19950, RHSA-2025:19951, RHSA-2025:21110, RHSA-2025:21111
Red Hat Hardened ImagesFixed RHSA-2026:6935
Red Hat OpenShift Container Platform 4.12Fixed RHSA-2026:0316
Red Hat OpenShift Container Platform 4.13Fixed RHSA-2026:0677
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:0996
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:1541
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:0326
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:0702
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:0332
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:0674
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:0420
Not affected: 5 products
  • Red Hat Discovery 2
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40780
  2. 2026-10-03 Alias added: GHSA-j3w4-m6qj-vmm5
  3. 2026-11-05 Affected versions changed · Red Hat

References

Advisory 1

  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
  • TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack CVSS 3.1CRITICAL 9.8
  • TI-1999-00042 Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and… CVSS 3.1CRITICAL 9.8
  • TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
  • TI-2025-27240 Cache poisoning attacks with unsolicited RRs CVSS 3.1HIGH 8.6
See all 285 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences