What is CVE-2023-42299?

CVE-2023-42299 is a critical-severity vulnerability in Openimageio, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-11-02.

How severe is CVE-2023-42299?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Openimageio

CVE-2023-42299

Buffer Overflow vulnerability in OpenImageIO oiio v.2.4.12.0 allows a remote attacker to execute arbitrary code and cause a denial of service via the read_subimage_data function.

Vulnerability class: Buffer Overflow

Published 2023-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Openimageio — versions 2.4.12.0

Weakness classification (CWE)

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

References

github.com/OpenImageIO/oiio/issues/3840 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-42299?: CVE-2023-42299 is a critical-severity vulnerability in Openimageio, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-11-02.
How severe is CVE-2023-42299?: Critical severity. CVSS v3 base score is 9.8 out of 10.