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  4. CVE 2026 68515 openexr heap out of bounds write in exrmultiview
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Back to active CVEs
High · CVSS 7.1CVE-2026-68515

OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel unionCVE-2026-68515

Answer in brief

CVE-2026-68515 records a High severity (CVSS 7.1) vulnerability in OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union. The current sources do not mark it as known exploited. The current feed maps AcademySoftwareFoundation/openexr (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Sep 9, 2026Source checked Oct 10, 2026First seen by HOL Aug 25, 2026Material review Sep 9, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps AcademySoftwareFoundation/openexr (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
AcademySoftwareFoundation/openexrgeneric>=3.3.0 <3.3.13 || >=3.4.0 <3.4.14 || <3.2.113.3.13, 3.4.14, 3.2.11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for AcademySoftwareFoundation/openexr.
  2. 2Review the reported fix. Update AcademySoftwareFoundation/openexr to 3.3.13 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketchAlso CWE-122
  • Apache DataSketches: datasketches-cpp: Out-of-bounds read and write in the CPC sketch deserialization allows memory corruption via a crafted sketchAlso CWE-787
  • ExtUtils::Typemaps::STL::Vector versions before 1.05 for Perl allocate a 32 GiB array on an empty listSame generic ecosystem
  • FunnelKit <= 3.16.0.5 - Unauthenticated Stored Cross-Site Scripting via Order Fields (shipping/billing)Same generic ecosystem
  • WPAdverts <= 2.3.4 - Unauthenticated Stored Cross-Site Scripting via 'adverts_location' ParameterSame generic ecosystem
  • Molongui Authorship <= 5.2.12 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment href AttributeSame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-122, CWE-787
Source
CVE List V5
Source checked
Oct 10, 2026
References
4 linked sources
Open source record