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Libexpat CVE-2026-25210

MEDIUM
Integer Overflow or Wraparound (CWE-190)
2026-01-30 cve@mitre.org
Integer Overflow Buffer Overflow Libexpat
6.9
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.9 MEDIUM
AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
SUSE
MEDIUM
qualitative
Red Hat
6.9 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
Patch released
Mar 10, 2026 - 18:17 nvd
Patch available
CVE Published
Jan 30, 2026 - 07:16 nvd
MEDIUM 6.9

DescriptionCVE.org

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

AnalysisAI

Libexpat versions before 2.7.4 are vulnerable to integer overflow in the doContent function during tag buffer reallocation, enabling local attackers with no privileges to achieve high-impact confidentiality and integrity violations. The flaw stems from missing overflow validation when calculating buffer sizes, allowing memory corruption that could lead to information disclosure or code execution. A patch is available for affected systems.

Technical ContextAI

Classified as CWE-190 (Integer Overflow or Wraparound). Affects Libexpat. In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

RemediationAI

A vendor patch is available — apply it immediately.

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Same weakness CWE-190 – Integer Overflow or Wraparound

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9.8
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8.8
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8.8
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9.3
CVE-2017-3599 HIGH POC
7.5
CVE-2017-7529 HIGH
7.5
CVE-2016-1010 HIGH
8.8
CVE-2013-3940 CRITICAL
9.3

Same technique Integer Overflow

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CVE-2014-0497 CRITICAL POC
9.8
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9.8
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8.8
CVE-2012-5054 HIGH POC
8.8
CVE-2014-0569 CRITICAL POC
9.3
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7.5
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7.5
CVE-2016-1010 HIGH
8.8

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container private-registry/harbor-portal:1.1.1-1.31 Container private-registry/harbor-trivy-adapter:1.1.1-1.32 Image SLES15-SP7-CHOST-BYOS-Aliyun Image SLES15-SP7-CHOST-BYOS-Azure Image SLES15-SP7-CHOST-BYOS-EC2 Image SLES15-SP7-CHOST-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-GDC Image SLES15-SP7-CHOST-BYOS-SAP-CCloud Image SLES15-SP7-GCE-3P Image pr_15_7 Image proxy-httpd-image Image proxy-salt-broker-image Image proxy-squid-image Image proxy-ssh-image Image proxy-tftpd-image Image server-database-migration-image Image server-hub-xmlrpc-api-image Image server-image Image server-saline-image Affected
Container suse/ltss/sle12.5/sles12sp5:8.5.201 Affected
Container suse/manager/4.3/proxy-httpd:4.3.16.2.9.73.20 Container suse/manager/4.3/proxy-salt-broker:4.3.16.2.9.63.21 Container suse/manager/4.3/proxy-ssh:4.3.16.2.9.63.14 Container suse/manager/4.3/proxy-tftpd:4.3.16.2.9.63.15 Container suse/manager/5.0/x86_64/proxy-httpd:latest Container suse/manager/5.0/x86_64/proxy-salt-broker:latest Container suse/manager/5.0/x86_64/proxy-ssh:latest Container suse/manager/5.0/x86_64/proxy-tftpd:latest Container suse/manager/5.0/x86_64/server-hub-xmlrpc-api:latest Container suse/manager/5.0/x86_64/server-migration-14-16:latest Container suse/manager/5.0/x86_64/server:latest Container suse/sle-micro/base-5.5:2.0.4-5.8.249 Container suse/sle-micro/kvm-5.5:2.0.4-3.5.478 Image SLES15-SP4-HPC-BYOS Image SLES15-SP4-HPC-BYOS-EC2 Image SLES15-SP4-HPC-EC2 Image SLES15-SP4-Hardened-BYOS Image SLES15-SP4-Hardened-BYOS-EC2 Image SLES15-SP5-HPC-BYOS-EC2 Image SLES15-SP5-Hardened-BYOS-EC2 Image SLES15-SP5-Micro-5-5 Image SLES15-SP5-Micro-5-5-Azure Affected
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.123 Affected
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.92 Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.110 Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.124 Container suse/sl-micro/6.0/toolbox:13.2-9.65 Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.2 Container suse/sl-micro/6.1/base-os-container:2.2.1-5.78 Container suse/sl-micro/6.1/kvm-os-container:2.2.1-5.80 Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.71 Image SL-Micro Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-EC2 Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected

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CVE-2026-25210 vulnerability details – vuln.today
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