CVE-2023-42295Public exploitNetwork attack vector

Code execution via BMP pixel-count overflow

Published Oct 23, 2023 · Updated Sep 12, 2024

Integer overflow in OpenImageIO 2.4.12.0 allows remote attackers to execute code or crash an application via a crafted BMP file. The BMP reader multiplies attacker-controlled image dimensions using signed arithmetic, allowing the total pixel count to overflow before vector allocation. Exploitation requires an application to open the file; the published proof of concept aborts iconvert, while the CVE record also reports code execution.

CVSS severity8.8
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in OpenImageIO 2.4.12.0 allows remote attackers to execute code or crash an application via a crafted BMP file. The BMP reader multiplies attacker-controlled image dimensions using signed arithmetic, allowing the total pixel count to overflow before vector allocation. Exploitation requires an application to open the file; the published proof of concept aborts iconvert, while the CVE record also reports code execution.

The record

CVE
CVE-2023-42295
Published
Oct 23, 2023
Updated
Sep 12, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 2024Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1204.002Malicious File

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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