Security readout for executives and security teams
Plain-English summary
This vulnerability is in GRUB2, the bootloader used before Linux starts. A malformed UFS symbolic link name can cause a heap out-of-bounds write. The main business concern is boot-chain integrity: Red Hat says this could eventually help bypass Secure Boot, but it requires local, high-privilege conditions.
Executive priority
Treat as a moderate-priority boot-chain integrity issue. It is not shown as actively exploited, and it requires high local privileges, but remediation matters for regulated, high-trust, or Secure Boot-dependent environments.
Technical view
GRUB2’s UFS filesystem code fails to validate a string length when reading a symbolic link name. The issue is classified as CWE-787 and scored CVSS 6.7 with local attack vector, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure appears concentrated in affected Red Hat GRUB2 and RHCOS builds. The bundle lists RHEL 9, RHEL 10, and OpenShift Container Platform 4 as affected. RHEL 7 and 8 status is unknown. Practical exposure depends on GRUB2 processing a malicious UFS filesystem during boot.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. The CVSS vector requires local access and high privileges, which lowers broad remote-risk urgency but does not remove concern for systems where Secure Boot trust is critical.
Researcher notes
Key constraints are the local attack vector, high privileges required, and the UFS symlink parsing path in GRUB2. Evidence supports potential Secure Boot bypass impact, but the bundle does not provide exploit maturity, patch mechanics, or affected non-Red Hat distributions.
Mitigation direction
- Apply applicable Red Hat advisories RHSA-2025:6990 or RHSA-2025:16154 where relevant.
- Check Red Hat’s CVE page for current fixed package guidance.
- Prioritize bootloader updates on Secure Boot and high-assurance systems.
- Limit high-privileged local access to boot configuration and boot media.
- Track RHEL 7 and 8 status because the bundle lists them as unknown.
Validation and detection
- Inventory GRUB2 package versions across RHEL and RHCOS systems.
- Compare installed versions with Red Hat advisory and CVE guidance.
- Confirm OpenShift nodes use remediated RHCOS content when applicable.
- Verify Secure Boot and bootloader update processes remain intact after patching.
- Record exceptions where vendor status is unknown or updates are unavailable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-45781 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9redhatVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineredhat
Reported to Red Hat.
- Source timelineredhat
Made public.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2025:16154CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2025:6990CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-45781CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2345857CVE reference, redhat · issue-tracking, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.