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RHSA-2025:21740

HIGH8.6

Red Hat Security Advisory: bind security update

Published Nov 19, 2025

Modified 1 weeks ago

Fix available

Affected Packages

Red Hat:rhel_aus:8.4::appstreambind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-debugsource

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-export-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-export-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-export-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-libs-lite

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-libs-lite-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-license

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-lite-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-pkcs11-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-sdb

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-sdb-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-sdb-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreambind-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::appstreampython3-bind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-debugsource

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-export-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-export-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-export-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-libs-lite

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-libs-lite-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-license

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-lite-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-pkcs11-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-sdb

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-sdb-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-sdb-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseosbind-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_aus:8.4::baseospython3-bind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-debugsource

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-export-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-export-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-export-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-libs-lite

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-libs-lite-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-license

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-lite-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-pkcs11-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-sdb

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-sdb-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-sdb-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreambind-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::appstreampython3-bind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-debugsource

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-export-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-export-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-export-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-libs-lite

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-libs-lite-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-license

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-lite-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-devel

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-libs

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-libs-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-pkcs11-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-sdb

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-sdb-chroot

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-sdb-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-utils

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseosbind-utils-debuginfo

Fixed in:

32:9.11.26-4.el8_4.8

Red Hat:rhel_eus_long_life:8.4::baseospython3-bind

Fixed in:

32:9.11.26-4.el8_4.8

References

ADVISORYhttps://access.redhat.com/errata/RHSA-2025:21740 REPORThttps://access.redhat.com/security/cve/CVE-2021-25220 REPORThttps://access.redhat.com/security/cve/CVE-2025-40778 ARTICLEhttps://access.redhat.com/security/updates/classification/#important REPORThttps://bugzilla.redhat.com/show_bug.cgi?id=2064512 REPORThttps://bugzilla.redhat.com/show_bug.cgi?id=2405827 ARTICLEhttps://kb.isc.org/docs/CVE-2021-25220 ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-25220 ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-40778 ADVISORYhttps://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21740.json ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2021-25220 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-40778

CVSS Analysis

CVSS v3.1

8.6

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

ChangedS:C

Impact

Confidentiality

NoneC:N

Integrity

HighI:H

Availability

NoneA:N

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

Upstream

CVE-2021-25220 CVE-2025-40778

Ecosystems

Red Hat rhel_aus 8.4 appstream Red Hat rhel_aus 8.4 baseos Red Hat rhel_eus_long_life 8.4 appstream Red Hat rhel_eus_long_life 8.4 baseos

Timeline

PublishedNov 19, 2025

ModifiedJan 7, 2026

RHSA-2025:21740 | Mondoo Vulnerability Intelligence