CVE-2023-26924Public exploit

Local service interruption via crafted MLIR input

Published Mar 27, 2023 · Updated Feb 19, 2025

A crash in LLVM MLIR at commit a0dab4950 allows local users to interrupt mlir-opt by processing a crafted MLIR file. The public report shows outlineSingleBlockRegion faulting during the test SCF if-utils pass but does not identify the erroneous memory operation. The gate is local execution of mlir-opt with that test pass; LLVM treats optimizer crashes on malicious input as outside its security boundary.

CVSS severity5.5
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A crash in LLVM MLIR at commit a0dab4950 allows local users to interrupt mlir-opt by processing a crafted MLIR file. The public report shows outlineSingleBlockRegion faulting during the test SCF if-utils pass but does not identify the erroneous memory operation. The gate is local execution of mlir-opt with that test pass; LLVM treats optimizer crashes on malicious input as outside its security boundary.

The record

CVE
CVE-2023-26924
Published
Mar 27, 2023
Updated
Feb 19, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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