CVE-2026-68515

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 26, 2026

Advisory Details (4)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit Patch Available

commit e2300a3d54a9 (AcademySoftwareFoundation/openexr)

Patch available: AcademySoftwareFoundation/openexr v3.2.11 (contains commit e2300a3d54a9)

https://github.com/AcademySoftwareFoundation/openexr/commit/e2300a3d54a93d20a36a86b82f3a506c4c91476f
github_commit Patch Available

commit c644ac2dfeac (AcademySoftwareFoundation/openexr)

Patch available: AcademySoftwareFoundation/openexr v3.3.13 (contains commit c644ac2dfeac)

https://github.com/AcademySoftwareFoundation/openexr/commit/c644ac2dfeac82939c81a8551d6f4b7859f63add
github_commit Patch Available

commit 77ee19c02139 (AcademySoftwareFoundation/openexr)

Patch available: AcademySoftwareFoundation/openexr v3.4.14 (contains commit 77ee19c02139)

https://github.com/AcademySoftwareFoundation/openexr/commit/77ee19c021398b1c56f32c3af8347e365dbd4f33
github Patch Available🟡 PoC Available

exrmultiview subsampled union heap OOB write · Advisory · AcademySoftwareFoundation/openexr · GitHub

https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjf7-wjjw-xq56

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 04:17 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-29 04:14 UTCEG score recompute
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 16:00 UTCEG score recompute
  6. 2026-08-26 15:57 UTCEG score recompute
  7. 2026-08-26 15:06 UTCEG score recompute
  8. 2026-08-26 14:47 UTCEPSS rescore
  9. 2026-08-25 20:23 UTCEG score recompute
  10. 2026-08-25 19:50 UTCEG score recompute
  11. 2026-08-25 19:49 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-68515?
CVE-2026-68515 is a high vulnerability published on August 25, 2026. 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,…
When was CVE-2026-68515 disclosed?
CVE-2026-68515 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68515 actively exploited?
CVE-2026-68515 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-68515?
CVE-2026-68515 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-68515?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68515, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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