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NVD / CVE Program· CNA GitHub_M

CVE-2026-65969: OpenImageIO: TGA-to-GIF palette split signed overflow causes SIGSEGV

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.19% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: openimageio (Debian:14) 3.1.18.0+dfsg-2; OpenImageIO (openSUSE:Tumbleweed) 3.1.16.0-1.1.

Low priority for now. Upgrade to openimageio (Debian:14) 3.1.18.0+dfsg-2; OpenImageIO (openSUSE:Tumbleweed) 3.1.16.0-1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 18, 2026
Updated
Sep 29, 2026
EPSS
0.1% · 9th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
5.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-65969

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
openimageioopenimageio

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • openimageio openimageiobefore 3.0.21.0
  • openimageio openimageio3.1.0.0 and later · up to 3.1.16.0 inclusive
  • openimageio openimageio3.2.0.0
  • openimageio openimageio3.2.0.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • AcademySoftwareFoundation OpenImageIO

    • < 3.0.21.0, >= 3.1.0.0, < 3.1.16.0, >= 3.2.0.0-dev, < 3.2.0.3-beta1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12openimageiofrom 0—
Debian:14openimageiobefore 3.1.18.0+dfsg-23.1.18.0+dfsg-2
openSUSE:TumbleweedOpenImageIObefore 3.1.16.0-1.13.1.16.0-1.1

Same product

openimageio: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-41838A code execution vulnerability exists in the DDS scanline parsing functionality of OpenImageIO Project OpenImageIO v2.4.4.2.
    40Plan
  • CVE-2022-41837An out-of-bounds write vulnerability exists in the OpenImageIO::add_exif_item_to_spec functionality of OpenImageIO Project OpenImageIO v2.4.
    40Plan
  • CVE-2022-41794A heap based buffer overflow vulnerability exists in the PSD thumbnail resource parsing code of OpenImageIO 2.3.19.0.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-63635Sep 18, 2026 · OpenImageIO: PSD RawColor invalid color mode causes global out-of-bounds read and allocation DoS
    22Monitor
  • ← EarlierCVE-2026-63638Sep 18, 2026 · OpenImageIO: Cineon invalid bit depth heap out-of-bounds write
    33Monitor
  • Later →CVE-2026-65970Sep 18, 2026 · OpenImageIO: TIFF multithreaded scanline read use-after-scope in `TIFFInput::read_native_scanlines`
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:openimageio3.1.18.0+dfsg-2 · Debian:14Package registry (OSV)
opensuse:OpenImageIO3.1.16.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-43909127 days apartOpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder
    35Monitor
  • CVE-2026-599560 days apartOpenImageIO: Heap-buffer-overread in IffInput::readimg() when ZBUFFER flag is set
    24Monitor
  • CVE-2026-634200 days apartOpenImageIO: PSD RawColor indexed image out-of-bounds read in `interleave_row`
    22Monitor
  • CVE-2026-636350 days apartOpenImageIO: PSD RawColor invalid color mode causes global out-of-bounds read and allocation DoS
    22Monitor
  • CVE-2026-502911 days apartOpenImageIO: Segmentation Fault in BmpInput::read_native_scanline (bmpinput.cpp:399)
    22Monitor
  • CVE-2026-43996127 days apartOpenImageIO: Integer wraparound in bounds check of decode_pixel leads to out-of-bounds read in TGA paletted image decoder
    22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records