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High 7.5Published Jun 12, 2025
CVE-2025-6021Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 30 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 12, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:2.12.5-7.el10_0 not affected | CNA record |
from 0:2.9.1-6.el7_9.10 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support redhat:rhel_aus | from 0:2.9.7-9.el8_2.3 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 0:2.9.7-9.el8_4.6 not affected | CNA record |
from 0:2.9.7-13.el8_6.10 not affected | CNA record | |
from 0:2.9.7-13.el8_6.10 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:2.9.13-10.el9_4 not affected | CNA record |
Red Hat Red Hat JBoss Core Services 2.4.62.SP2 redhat:jboss_core_services | 1.0 | CNA record |
Red Hat Red Hat OpenShift Container Platform 4.12 redhat:openshift | from 412.86.202509030110-0 not affected | CNA record |
Red Hat Red Hat Discovery 2 redhat:discovery | from 2.0.1-1754478727 not affected | CNA record |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 2.15.2-0.3.hum1 not affected | CNA record |
Red Hat Red Hat Insights proxy 1.5 redhat:insights_proxy | from 1.5.5-1754504343 not affected | CNA record |
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name) | before V5.0 | CISA ADP |
xmlsoft libxml2 xmlsoft:libxml2 | before 2.14.4 | NVD |
redhat jboss_core_services redhat:jboss_core_services | all versions | NVD |
redhat openshift_container_platform redhat:openshift_container_platform | 4.12; 4.13; 4.14; 4.15; 4.16; 4.17; 4.18 | NVD |
redhat openshift_container_platform_for_arm64 redhat:openshift_container_platform_for_arm64 | 4.13; 4.14; 4.15; 4.16; 4.17; 4.18 | NVD |
redhat openshift_container_platform_for_ibm_z redhat:openshift_container_platform_for_ibm_z | 4.13; 4.14; 4.15; 4.16; 4.17; 4.18 | NVD |
redhat openshift_container_platform_for_linuxone redhat:openshift_container_platform_for_linuxone | 4.13; 4.14; 4.15; 4.16; 4.17; 4.18 | NVD |
redhat openshift_container_platform_for_power redhat:openshift_container_platform_for_power | 4.13; 4.14; 4.15; 4.16; 4.17; 4.18 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0; 9.0; 10.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 8.4; 8.6; 8.8; 9.4; 9.6; 10.0 | NVD |
redhat enterprise_linux_for_arm_64 redhat:enterprise_linux_for_arm_64 | 8.0_aarch64; 9.0_aarch64; 9.4_aarch64; 10.0_aarch64 | NVD |
redhat enterprise_linux_for_arm_64_eus redhat:enterprise_linux_for_arm_64_eus | 9.4_aarch64; 9.6_aarch64; 10.0_aarch64 | NVD |
redhat enterprise_linux_for_ibm_z_systems redhat:enterprise_linux_for_ibm_z_systems | 8.0_s390x; 9.4_s390x; 10.0_s390x | NVD |
redhat enterprise_linux_for_ibm_z_systems_eus redhat:enterprise_linux_for_ibm_z_systems_eus | 9.0_s390x; 9.4_s390x; 9.6_s390x; 10.0_s390x | NVD |
redhat enterprise_linux_for_power_little_endian redhat:enterprise_linux_for_power_little_endian | 8.0_ppc64le; 9.0_ppc64le; 10.0_ppc64le | NVD |
redhat enterprise_linux_for_power_little_endian_eus redhat:enterprise_linux_for_power_little_endian_eus | 9.4_ppc64le; 9.6_ppc64le; 10.0_ppc64le | NVD |
redhat enterprise_linux_server redhat:enterprise_linux_server | 7.0 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 8.2; 8.4; 8.6; 9.2; 9.4; 9.6 | NVD |
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.4_ppc64le | NVD |
redhat enterprise_linux_server_tus redhat:enterprise_linux_server_tus | 8.8 | NVD |
redhat in-vehicle_operating_system redhat:in-vehicle_operating_system | 1.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2025:10630vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:10698vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:10699vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:11580vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:11673vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:12098vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12099vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12199vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12237vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12239vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12240vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:12241vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:13267vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:13289vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:13325vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:13335vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:13336vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:14059vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:14396vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:15308vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:15672vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19020vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:7519vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2025-6021vdb-entry, x-refsource-redhat, third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2372406issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.