CVE-2026-73066

MEDIUMPre-NVD 6.86.8
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). 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 a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-56181 (ENISA EUVD)Source: ENISA EUVD

6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity68% × 45%
Impact severity (EG Severity): CVSS 6.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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.
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 (6.8): severity, escalated by confirmed exploitation. This CVE's 6.8 is its impact severity (EG Severity), not escalated.

EG Severity
6.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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

August 11, 2026

Last Modified

October 24, 2026

Advisory Details (4)

Auto-updated Aug 11, 2026
Patch available. Sources: github_pr, github_commit, github_release, github.
GitHub release Patch Available

5.5.3

Patch available: tesseract-ocr/tesseract 5.5.3

https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3
GitHub commit Patch Available

commit 2f4d2f4bf45c (tesseract-ocr/tesseract)

Patch available: tesseract-ocr/tesseract 5.5.3 (contains commit 2f4d2f4bf45c)

https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72
GitHub pull request Patch Available

Fix integer overflow in LSTM Convolve and Reconfig deserialization

Patch available: tesseract-ocr/tesseract 5.5.3 (PR #4588 merged 2026-07-23)

https://github.com/tesseract-ocr/tesseract/pull/4588
GitHub advisoryMentions a patch (unverified)

Heap out-of-bounds write (CWE-787) in LSTM Convolve layer via crafted .traineddata · Advisory · tesseract-ocr/tesseract · GitHub

https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhaii/vllm-rocm-rhel9:17914258692026-10-13redhat
redhatrhaii/model-opt-cuda-rhel9:17918038212026-10-13redhat
redhatrhaii/vllm-cuda-rhel9:17914736312026-10-13redhat
redhatrhaii/vllm-cpu-rhel9:17914736142026-10-13redhat
redhatrhaii/vllm-gaudi-rhel9:17914271822026-10-13redhat
redhatrhaii/vllm-spyre-rhel9:17918183572026-10-13redhat
redhatrhai/base-image-cuda-13.0-rhel9:17912318202026-10-12redhat
redhatrhai/base-image-cuda-12.9-rhel9:17912322572026-10-12redhat
redhatrhai/base-image-cpu-rhel9:17907036562026-10-05redhat
redhatrhai/base-image-cuda-12.9-rhel9:17907037062026-10-05redhat
redhatrhai/base-image-spyre-rhel9:17907036302026-10-05redhat
redhatrhai/base-image-neuron-rhel9:17907035572026-10-05redhat
redhatrhai/base-image-tpu-rhel9:17907035542026-10-05redhat
redhatrhai/base-image-rubin-rhel9:17907037072026-10-05redhat
redhatrhai/base-image-rocm-7.14-rhel9:17907035542026-10-05redhat
redhatrhai/base-image-cuda-13.0-rhel9:17907036452026-10-05redhat
redhatrhai/base-image-tpu-rhel9:17907035162026-10-01redhat
redhatrhai/base-image-tpu-rhel9:17907035392026-10-01redhat
redhatrhai/base-image-cuda-13.0-rhel9:17907036412026-10-01redhat
redhatrhai/base-image-rocm-6.4-rhel9:17907035452026-10-01redhat
redhatrhai/base-image-gaudi-rhel9:17907035532026-10-01redhat
redhatrhai/base-image-cuda-12.9-rhel9:17907036302026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035972026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907035062026-10-01redhat
redhatrhai/base-image-neuron-rhel9:17907035422026-10-01redhat
redhatrhai/base-image-rocm-7.1-rhel9:17907035412026-10-01redhat
redhatrhai/base-image-gaudi-rhel9:17907035522026-10-01redhat
redhatrhai/base-image-cpu-rhel9:17907036312026-10-01redhat
redhatrhai/base-image-rocm-7.0-rhel9:17907035162026-10-01redhat
redhatrhai/base-image-rocm-6.4-rhel9:17907035242026-10-01redhat

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
tesseract5.3.0-2 ... 5.5.0-1.1 (9 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
tesseract5.5.0-1, 5.5.0-1.1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
tesseract5.5.0-1, 5.5.0-1.1
  • 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

(25)

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 / 44× 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 145 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 45 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

Frequently asked(5)

What is CVE-2026-73066?
CVE-2026-73066 is a medium-severity vulnerability; its CVE record was published on August 11, 2026. Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count,…
When was the CVE record for CVE-2026-73066 published?
The CVE record for CVE-2026-73066 was published on August 11, 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 24, 2026; the record at its source may have been updated since.
Is CVE-2026-73066 actively exploited?
CVE-2026-73066 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-2026-73066?
CVE-2026-73066 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73066?
A fix for CVE-2026-73066 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73066 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73066

Explore →

Is Your Infrastructure Affected by CVE-2026-73066?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.