CVE-2026-88051

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: 0.2% (6th 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 — Patch released this weekElevated

Also known asEUVD-2026-75627 (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: 0.2%CVSS: 7.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the backing array, but the callback loop writes size_used_ elements. A crafted TESSDATA_INTTEMP component with version_id 4 or later can therefore set reserved to a small value and size_used_ to a large value when fontinfo_table_.read(fp, read_info) is called from src/classify/intproto.cpp, causing a heap out-of-bounds write of FontInfo structures, heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

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
0.2%
EPSS %ILE
6th
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
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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

September 10, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
Patch available. Sources: github, github_commit.
GitHub commit

commit 56e09ca12e75 (tesseract-ocr/tesseract)

Fix landed in tesseract-ocr/tesseract commit 56e09ca12e75 — awaiting tagged release

https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0
GitHub advisoryMentions a patch (unverified)

Heap out-of-bounds write in GenericVector<T>::read due to independent reserved/size_used_ fields · Advisory · tesseract-ocr/tesseract · GitHub

https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3

Vendor Advisories for CVE-2026-88051(2)

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

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutesseract-ocr-dev (3.03.02-3ubuntu0.1~esm1) @ trusty2026-11-10ubuntu
redhattesseract-0:4.1.1-2.el8_6.32026-11-09redhat
redhattesseract-0:4.1.1-2.el8_8.32026-11-09redhat
redhattesseract-0:4.1.1-7.el8_102026-11-05redhat
redhattesseract-0:5.3.4-11.el10_22026-11-04redhat
redhattesseract-0:4.1.1-11.el9_82026-11-04redhat

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.

Additional Vendor Advisories

(4)

Data Freshness Timeline

(refreshed 8× in last 7d / 32× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 114 rows 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 14 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:58 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-11-10 23:37 UTCEchelonGraph re-scored
  5. 2026-11-10 23:37 UTCVendor advisory
  6. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-11-03 21:11 UTCEchelonGraph re-scored
  14. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-27 19:52 UTCEchelonGraph re-scored
  22. 2026-10-27 19:52 UTCVendor advisory
  23. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 75 more
  1. 2026-10-25 13:53 UTCEchelonGraph re-scored
  2. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-20 07:19 UTCEchelonGraph re-scored
  8. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-18 03:03 UTCEchelonGraph re-scored
  11. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-13 05:04 UTCEchelonGraph re-scored
  17. 2026-10-13 05:04 UTCVendor advisory
  18. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-12 14:49 UTCEchelonGraph re-scored
  20. 2026-10-11 21:49 UTCVendor advisory
  21. 2026-10-11 19:15 UTCEchelonGraph re-scored
  22. 2026-10-11 16:32 UTCEchelonGraph re-scored
  23. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-11 13:49 UTCEchelonGraph re-scored
  25. 2026-10-11 07:04 UTCEchelonGraph re-scored
  26. 2026-10-11 07:04 UTCVendor advisory
  27. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  28. 2026-10-10 06:44 UTCEchelonGraph re-scored
  29. 2026-10-10 06:44 UTCVendor advisory
  30. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  31. 2026-10-08 23:46 UTCEchelonGraph re-scored
  32. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  33. 2026-10-08 01:35 UTCEchelonGraph re-scored
  34. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  35. 2026-10-07 02:40 UTCVendor advisory
  36. 2026-10-06 15:48 UTCEchelonGraph re-scored
  37. 2026-10-06 15:48 UTCVendor advisory
  38. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-10-06 04:30 UTCEchelonGraph re-scored
  40. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  41. 2026-10-05 06:12 UTCEchelonGraph re-scored
  42. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  43. 2026-10-03 21:12 UTCEchelonGraph re-scored
  44. 2026-10-02 20:49 UTCEchelonGraph re-scored
  45. 2026-10-01 22:54 UTCEchelonGraph re-scored
  46. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-10-01 00:50 UTCEchelonGraph re-scored
  48. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  49. 2026-09-30 01:55 UTCEchelonGraph re-scored
  50. 2026-09-29 02:02 UTCEchelonGraph re-scored
  51. 2026-09-28 15:11 UTCEchelonGraph re-scored
  52. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  53. 2026-09-27 17:25 UTCEchelonGraph re-scored
  54. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  55. 2026-09-26 19:28 UTCEchelonGraph re-scored
  56. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  57. 2026-09-26 08:36 UTCEchelonGraph re-scored
  58. 2026-09-24 21:45 UTCEchelonGraph re-scored
  59. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  60. 2026-09-23 23:23 UTCEchelonGraph re-scored
  61. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-09-23 01:39 UTCEchelonGraph re-scored
  63. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  64. 2026-09-22 03:55 UTCEchelonGraph re-scored
  65. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-09-21 05:45 UTCEchelonGraph re-scored
  67. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-09-19 20:58 UTCEchelonGraph re-scored
  69. 2026-09-18 23:15 UTCEchelonGraph re-scored
  70. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-09-18 01:32 UTCEchelonGraph re-scored
  72. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  73. 2026-09-16 16:56 UTCEchelonGraph re-scored▼ 0.80
  74. 2026-09-16 16:40 UTCNVD updateCVSS v3 → 7.8
  75. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Frequently asked(5)

What is CVE-2026-88051?
CVE-2026-88051 is a high-severity vulnerability; its CVE record was published on September 10, 2026. Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the…
When was the CVE record for CVE-2026-88051 published?
The CVE record for CVE-2026-88051 was published on September 10, 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 16, 2026; the record at its source may have been updated since.
Is CVE-2026-88051 actively exploited?
CVE-2026-88051 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-88051?
CVE-2026-88051 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-88051?
A fix for CVE-2026-88051 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-88051 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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