Is CVE-2026-43906 in the CISA KEV catalog?

No. CVE-2026-43906 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-43906?

CVE-2026-43906 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2026-43906?

CVE-2026-43906 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-43906?

Upgrade libopenimageio-dev on ubuntu 16.04 to 1.6.11~dfsg0-1ubuntu1+esm2 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2026-43906

HIGH

7.8

CVSS v3

NVD

Description

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a heap-based buffer overflow in the HEIF decoder of OpenImageIO allows out-of-bounds writes via crafted images due to a subimage metadata mismatch, leading to memory corruption and potential code execution. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

libopenimageio-devUbuntu

Fixed in:1.6.11~dfsg0-1ubuntu1+esm2USN-8438-1

Fixed in:1.7.17~dfsg0-1ubuntu2+esm1USN-8438-1

Fixed in:2.1.12.0~dfsg0-1ubuntu0.1~esm1USN-8438-1

Fixed in:2.4.17.0+dfsg-1.1ubuntu0.1~esm1USN-8438-1

libopenimageio1.6Ubuntu

Fixed in:1.6.11~dfsg0-1ubuntu1+esm2USN-8438-1

libopenimageio1.7Ubuntu

Fixed in:1.7.17~dfsg0-1ubuntu2+esm1USN-8438-1

libopenimageio2.1Ubuntu

Fixed in:2.1.12.0~dfsg0-1ubuntu0.1~esm1USN-8438-1

libopenimageio2.4t64Ubuntu

Fixed in:2.4.17.0+dfsg-1.1ubuntu0.1~esm1USN-8438-1

openimageioUbuntu

Fixed in:1.6.11~dfsg0-1ubuntu1+esm2USN-8438-1

Fixed in:1.7.17~dfsg0-1ubuntu2+esm1USN-8438-1

Fixed in:2.1.12.0~dfsg0-1ubuntu0.1~esm1USN-8438-1

Fixed in:2.4.17.0+dfsg-1.1ubuntu0.1~esm1USN-8438-1

openimageio-toolsUbuntu

Fixed in:1.6.11~dfsg0-1ubuntu1+esm2USN-8438-1

Fixed in:1.7.17~dfsg0-1ubuntu2+esm1USN-8438-1

Fixed in:2.1.12.0~dfsg0-1ubuntu0.1~esm1USN-8438-1

Fixed in:2.4.17.0+dfsg-1.1ubuntu0.1~esm1USN-8438-1

python-openimageioUbuntu

Fixed in:1.6.11~dfsg0-1ubuntu1+esm2USN-8438-1

Fixed in:1.7.17~dfsg0-1ubuntu2+esm1USN-8438-1

python3-openimageioUbuntu

Fixed in:2.1.12.0~dfsg0-1ubuntu0.1~esm1USN-8438-1

Fixed in:2.4.17.0+dfsg-1.1ubuntu0.1~esm1USN-8438-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Exploit1

github.com

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-15.