5.5

CVE-2026-50291: academysoftwarefoundation openimageio Out-of-bounds Read

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-50291DEBIAN-CVE-2026-50291
Published 17-09-2026Last modified 24-09-2026
Open JSON

Vulnerability summary

CVE-2026-50291 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in academysoftwarefoundation openimageio. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 24-09-2026
    Last 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 versions 3.0.16.0 and 3.1.11.0, processing a crafted BMP file through oiiotool or an application linked to OpenImageIO can reach BMP palette handling in src/bmp.imageio/bmpinput.cpp with an empty color table. BmpInput::read_native_scanline then performs an invalid palette read while decoding an RLE-compressed scanline, causing a process crash and denial of service. This issue is fixed in versions 3.0.16.0 and 3.1.11.0.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

+0.06 pp

From 0.14% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Openimageio

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Academysoftwarefoundation1 product
Debian1 product
  • openimageioAll versions (No fix recorded) | < 3.1.18.0+dfsg-2
Openimageio1 product
Ubuntu1 product
  • openimageioAll versions (No fix recorded)

4 vendors · 4 products

References

10 links