PT-2026-41029 · Unknown · Openimageio

Biniamf · CVE-2026-43996 · Published 2026-05-14 · Updated 2026-05-16

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenImageIO versions prior to 3.0.18.0 OpenImageIO versions prior to 3.1.13.0

Description An issue exists in the TGAInput::decode pixel() function where the bounds check computes k + palbytespp using unsigned 32-bit arithmetic. If k is 0xFFFFFFFC and palbytespp is 4, the addition wraps to 0, bypassing the palette alloc size check. This allows the subsequent palette access to use the unwrapped k value as an index, resulting in a read operation approximately 4 GB beyond the start of the palette buffer, leading to a segmentation fault (SEGV), which is an abnormal termination of a program when it attempts to access a memory location that it is not allowed to access.

Recommendations Update to version 3.0.18.0. Update to version 3.1.13.0.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-43996

GHSA-MQ8J-73C4-CR55

Affected Products

Openimageio

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43996.json · Exploit
• 🔥 https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55 · Exploit
• https://ubuntu.com/security/CVE-2026-43996 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43996 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43996 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43996 · Security Note
• https://osv.dev/vulnerability/CVE-2026-43996 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43996 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43996 · Vendor Advisory
• https://t.me/cveNotify/163708 · Telegram Post