CVE-2026-43904: academysoftwarefoundation openimageio Out-of-bounds Write
Vulnerability summary
CVE-2026-43904 is a high (CVSS 8.4) Out-of-bounds Write vulnerability in academysoftwarefoundation openimageio. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 14-05-2026PublishedVulnerability first disclosed.
- 16-05-2026Last modifiedVulnerability information updated.
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, softimageinput.cpp:469 (mixed RLE) and :345 (pure RLE) do not clamp the run length to remaining scanline width before writing pixels. The raw packet path (line 403) correctly clamps with std::min, but RLE paths skip this check. A crafted .pic file causes heap overflow up to 65535 bytes. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
CVSS metrics
6 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.4HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- NVDNIST8.4HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
+0.01 pp
From 0.17% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundOpenimageio
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Academysoftwarefoundation1 product
- openimageio< 3.0.18.0 | ≥ 3.1.4.0-beta, < 3.1.13.0
Debian1 product
- openimageioAll versions (No fix recorded) | < 3.1.18.0+dfsg-2
Openimageio1 product
- openimageio< 3.0.18.0 | ≥ 3.1.4.0, < 3.1.13.0
Ubuntu1 product
- openimageio< 1.6.11~dfsg0-1ubuntu1+esm2 | < 1.7.17~dfsg0-1ubuntu2+esm1 | < 2.1.12.0~dfsg0-1ubuntu0.1~esm1 | All versions (No fix recorded) | < 2.4.17.0+dfsg-1.1ubuntu0.1~esm1 | < 2.5.19.1+dfsg-2ubuntu0.1~esm1
4 vendors · 4 products
References
4 links- github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-4499-j545-7q33X Refsource CONFIRMREPORTExploitVendor Advisory
