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
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 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 (value × EchelonGraph’s weight)
Severity68% × 45%
The EG Score, 6.8 of 10.
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

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.

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

September 9, 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

Vendor Advisories for CVE-2026-73066(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhai/base-image-rocm-7.14-rhel9:17907035542026-10-05redhat
redhatrhai/base-image-tpu-rhel9:17907035542026-10-05redhat
redhatrhai/base-image-spyre-rhel9:17907036302026-10-05redhat
redhatrhai/base-image-cuda-12.9-rhel9:17907037062026-10-05redhat
redhatrhai/base-image-rubin-rhel9:17907037072026-10-05redhat
redhatrhai/base-image-cuda-13.0-rhel9:17907036452026-10-05redhat
redhatrhai/base-image-cpu-rhel9:17907036562026-10-05redhat
redhatrhai/base-image-neuron-rhel9:17907035572026-10-05redhat
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-rhel9:17907035062026-10-01redhat
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-tpu-rhel9:17907035162026-10-01redhat
redhatrhai/base-image-rocm-7.0-rhel9:17907035162026-10-01redhat
redhatrhai/base-image-rocm-6.4-rhel9:17907035242026-10-01redhat
redhatrhai/base-image-neuron-rhel9:17907035162026-10-01redhat
redhatrhai/base-image-cpu-rhel9:17907035902026-10-01redhat
redhatrhai/base-image-tpu-rhel9:17907034972026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035682026-10-01redhat
redhatrhai/base-image-cuda-rhel9:17907035862026-10-01redhat
redhatrhai/base-image-rocm-rhel9:17907034942026-10-01redhat
redhatrhai/base-image-cuda-12.9-rhel9:17907036082026-10-01redhat
redhatrhai/base-image-spyre-rhel9:17907035792026-10-01redhat

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 10× in last 7d / 58× 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 97 of 114 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 17 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

Related CVEs(same product + same vendor + same CWE)

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 September 9, 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.

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