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Vulnerability record · public intelligence
CVE-2023-40551
MEDIUM
Shim: out of bounds read when parsing mz binaries
Published Jan 29, 2024 · Updated Nov 3, 2026
Severity · CVSSMEDIUM · Not scored
Known exploitationNot listed
EPSS / likelihood0.40%
QFinch risk scoreNot available
Original summary
Normalized public record · Updated Nov 3, 2026
Shim: out of bounds read when parsing mz binaries
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
FIRST-EPSSCVE-LIST-V5
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- RHSA-2024:1834 ↗
- RHSA-2024:1835 ↗
- RHSA-2024:1873 ↗
- RHSA-2024:1876 ↗
- RHSA-2024:1883 ↗
- RHSA-2024:1902 ↗
- RHSA-2024:1903 ↗
- RHSA-2024:1959 ↗
- RHSA-2024:2086 ↗
- access.redhat.com ↗
- RHBZ#2259918 ↗
- lists.debian.org ↗
Record history
Published Jan 29, 2024 · Last refreshed Nov 3, 2026