OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable to crashing. This occurs when Imf::GetChannelsInMultiPartFile() processes a crafted EXR with an empty multiView header attribute and Imf::viewFromChannelName() indexes the empty vector for a dotless channel name. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
CVE-2026-61555
MEDIUMPre-NVD 5.55.5—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 94% 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
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EG Risk
- 25(Track)EG Risk 25/100SSVC: 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 computedSeverity55% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 6%
- 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 c6d3796918f8 (AcademySoftwareFoundation/openexr)
Patch available: AcademySoftwareFoundation/openexr v3.2.11 (contains commit c6d3796918f8)
https://github.com/AcademySoftwareFoundation/openexr/commit/c6d3796918f8e358c9c329e909fa6b0dd7dc8cb9github_commit Patch Available
commit b4257c7740a0 (AcademySoftwareFoundation/openexr)
Patch available: AcademySoftwareFoundation/openexr v3.3.13 (contains commit b4257c7740a0)
https://github.com/AcademySoftwareFoundation/openexr/commit/b4257c7740a05071262e496ae7e7efa4774712f5github_commit Patch Available
commit 6c6bc2d485f1 (AcademySoftwareFoundation/openexr)
Patch available: AcademySoftwareFoundation/openexr v3.4.14 (contains commit 6c6bc2d485f1)
https://github.com/AcademySoftwareFoundation/openexr/commit/6c6bc2d485f1435d3776b3b4a36f1617cf87070bgithub Patch Available🟡 PoC Available
empty multiView viewFromChannelName file crash · Advisory · AcademySoftwareFoundation/openexr · GitHub
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-g8f2-r72m-48vxWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 10× 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.
- 2026-08-29 00:15 UTCEG score recompute
- 2026-08-28 21:42 UTCEPSS rescore
- 2026-08-27 20:59 UTCEG score recompute
- 2026-08-27 14:25 UTCEPSS rescore
- 2026-08-26 20:40 UTCEG score recompute
- 2026-08-26 19:30 UTCEG score recompute
- 2026-08-26 14:46 UTCEPSS rescore
- 2026-08-25 19:20 UTCEG score recompute
- 2026-08-25 18:30 UTCEG score recompute
- 2026-08-25 18:29 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-61555?
CVE-2026-61555 is a medium 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. OpenEXR versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable to crashing. This occurs when Imf::GetChannelsInMultiPartFile() processes a…
When was CVE-2026-61555 disclosed?
CVE-2026-61555 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-2026-61555 actively exploited?
CVE-2026-61555 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 93.7% of all scored CVEs.
What is the CVSS score of CVE-2026-61555?
CVE-2026-61555 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-61555?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61555, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-61555
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