CVE-2026-43903

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-30387 (ENISA EUVD)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, sgiinput.cpp:265,274 use OIIO_DASSERT for bounds checking in the RLE decode loop. In release builds, OIIO_DASSERT compiles to ((void)sizeof(x)) (dassert.h:210), making all bounds checks no-ops. A crafted .sgi file with RLE count exceeding scanline width causes heap buffer overflow and crash. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
51
EG Risk 51/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 14, 2026

Last Modified

October 26, 2026

Advisory Details (1)

Auto-updated May 14, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

SGI RLE decoder heap buffer overflow OIIO_DASSERT bounds checks are no-ops in release builds · Advisory · AcademySoftwareFoundation/OpenImageIO · GitHub

https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-jg3q-vm3q-2j35

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython-openimageio (1.6.11~dfsg0-1ubuntu1+esm2) @ xenial2026-10-27ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openimageio2.2.10.1+dfsg-1 ... 2.5.7.0+dfsg-1 (43 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openimageio2.4.12.0+dfsg-1 ... 2.5.7.0+dfsg-1 (18 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openimageio2.5.18.0+dfsg-1, 2.5.19.1+dfsg-1, 2.5.19.1+dfsg-2
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openimageio2.5.18.0+dfsg-1, 2.5.19.1+dfsg-1, 2.5.19.1+dfsg-2
  • every version on: no fix on record
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 221 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 121 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-27 21:00 UTCEG score recompute
  6. 2026-10-27 21:00 UTCVendor advisory
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-26 14:38 UTCEG score recompute
  10. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-25 14:28 UTCEG score recompute
  12. 2026-10-25 05:23 UTCEG score recompute
  13. 2026-10-25 05:23 UTCVendor advisory
  14. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-18 03:39 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-17 14:08 UTCEG score recompute
  24. 2026-10-17 14:08 UTCVendor advisory
  25. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 75 more
  1. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-12 16:05 UTCEG score recompute
  6. 2026-10-11 19:47 UTCEG score recompute
  7. 2026-10-11 17:02 UTCEG score recompute
  8. 2026-10-11 14:28 UTCEG score recompute
  9. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-09-30 04:58 UTCOSV refresh
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  31. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  32. 2026-09-11 07:53 UTCOSV refresh
  33. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  34. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  35. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  36. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  37. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  38. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  41. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-08-23 17:37 UTCEG score recompute
  45. 2026-08-23 17:37 UTCVendor advisory
  46. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  47. 2026-08-22 01:46 UTCEG score recompute
  48. 2026-08-22 01:46 UTCVendor advisory
  49. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-08-20 19:32 UTCEG score recompute
  52. 2026-08-20 19:32 UTCVendor advisory
  53. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  56. 2026-08-17 10:22 UTCEG score recompute
  57. 2026-08-17 10:22 UTCVendor advisory
  58. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-16 03:55 UTCEG score recompute
  60. 2026-08-16 03:55 UTCVendor advisory
  61. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-08-15 01:26 UTCVendor advisory
  64. 2026-08-14 13:55 UTCVendor advisory
  65. 2026-08-14 02:24 UTCEG score recompute
  66. 2026-08-14 02:24 UTCVendor advisory
  67. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-08-13 02:29 UTCVendor advisory
  69. 2026-08-12 14:58 UTCEG score recompute
  70. 2026-08-12 14:58 UTCVendor advisory
  71. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  72. 2026-08-11 15:24 UTCEG score recompute
  73. 2026-08-11 15:24 UTCVendor advisory
  74. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-08-11 00:51 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-43903?
CVE-2026-43903 is a high-severity vulnerability; its CVE record was published on May 14, 2026. OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, sgiinput.cpp:265,274 use OIIO_DASSERT for bounds checking in the RLE decode loop. In release builds, OIIO_DASSERT compiles to…
When was the CVE record for CVE-2026-43903 published?
The CVE record for CVE-2026-43903 was published on May 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-43903 actively exploited?
CVE-2026-43903 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43903?
CVE-2026-43903 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43903?
A fix for CVE-2026-43903 is available: update to the fixed version the vendor names in its advisory.

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