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Grub2 CVE-2025-0689

HIGH
Classic Buffer Overflow (CWE-120)
2025-03-03 secalert@redhat.com
Buffer Overflow RCE Grub2
7.8
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SUSE
HIGH
qualitative
Red Hat
7.8 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

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

Lifecycle Timeline

3
Patch released
Apr 02, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 28, 2026 - 18:29 vuln.today
CVE Published
Mar 03, 2025 - 15:15 nvd
HIGH 7.8

DescriptionCVE.org

When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.

AnalysisAI

When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections. Affected products include: Gnu Grub2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

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Same weakness CWE-120 – Classic Buffer Overflow

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CVE-2017-7269 CRITICAL POC
9.8
CVE-2016-10174 CRITICAL POC
9.8
CVE-2016-0099 HIGH POC
7.8
CVE-2016-6366 HIGH POC
8.8
CVE-2013-1331 HIGH
7.8
CVE-2013-0641 HIGH
7.8
CVE-2017-15222 CRITICAL POC
9.8
CVE-2012-2763 HIGH POC
7.5

Same technique Buffer Overflow

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CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2017-11882 HIGH POC
7.8
CVE-2010-3333 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: High
Product Status
Container suse/manager/5.0/x86_64/server:5.0.4.7.19.1 Affected
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.30 Affected
Container suse/sl-micro/6.1/base-os-container:2.2.1-5.40 Affected
Container suse/sle-micro-rancher/5.2:latest Image SLES15-SP3-BYOS-Azure Image SLES15-SP3-BYOS-GCE Image SLES15-SP3-HPC-BYOS-Azure Image SLES15-SP3-HPC-BYOS-GCE Image SLES15-SP3-Micro-5-2-BYOS-Azure Image SLES15-SP3-Micro-5-2-BYOS-GCE Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production Image SLES15-SP3-SAP-BYOS-Azure Image SLES15-SP3-SAP-BYOS-GCE Image SLES15-SP3-SAPCAL-Azure Image SLES15-SP3-SAPCAL-GCE Affected
Container suse/sle-micro-rancher/5.3:latest Container suse/sle-micro-rancher/5.4:latest Image SLES15-SP4-BYOS-Azure Image SLES15-SP4-BYOS-GCE Image SLES15-SP4-CHOST-BYOS-Azure Image SLES15-SP4-CHOST-BYOS-GCE Image SLES15-SP4-CHOST-BYOS-SAP-CCloud Image SLES15-SP4-HPC-BYOS-Azure Image SLES15-SP4-HPC-BYOS-GCE Image SLES15-SP4-HPC-GCE Image SLES15-SP4-Hardened-BYOS-Azure Image SLES15-SP4-Hardened-BYOS-GCE Image SLES15-SP4-Manager-Proxy-4-3-BYOS Image SLES15-SP4-Manager-Proxy-4-3-BYOS-Azure Image SLES15-SP4-Manager-Proxy-4-3-BYOS-GCE Image SLES15-SP4-Manager-Server-4-3-BYOS Image SLES15-SP4-Manager-Server-4-3-BYOS-Azure Image SLES15-SP4-Manager-Server-4-3-BYOS-GCE Image SLES15-SP4-SAP-Azure Image SLES15-SP4-SAP-Azure-LI-BYOS Image SLES15-SP4-SAP-Azure-LI-BYOS-Production Image SLES15-SP4-SAP-Azure-VLI-BYOS Image SLES15-SP4-SAP-Azure-VLI-BYOS-Production Image SLES15-SP4-SAP-BYOS-Azure Image SLES15-SP4-SAP-BYOS-GCE Image SLES15-SP4-SAP-GCE Image SLES15-SP4-SAP-Hardened Image SLES15-SP4-SAP-Hardened-Azure Image SLES15-SP4-SAP-Hardened-BYOS-Azure Image SLES15-SP4-SAP-Hardened-BYOS-GCE Image SLES15-SP4-SAP-Hardened-GCE Image SLES15-SP4-SAPCAL-Azure Image SLES15-SP4-SAPCAL-GCE Affected

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CVE-2025-0689 vulnerability details – vuln.today
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