CVE-2026-88047

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% (1st 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 week

Also known asEUVD-2026-75590 (ENISA EUVD)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Classify::ReadNormProtos in src/classify/normmatch.cpp parses the NORMPROTO component of a .traineddata file and uses std::istream::operator>>(char*) to extract a whitespace-delimited token into a fixed 61-byte stack buffer without setting a stream width. The 100-byte line buffer can carry a token of up to 99 characters, so a token longer than 60 characters writes up to 39 attacker-controlled bytes past the buffer during TessBaseAPI::Init of the legacy engine, causing stack corruption, denial of service, and potentially control-flow hijacking on affected standard-library implementations. Builds using Apple's libc++ C++20 bounded array overload are incidentally protected, while typical libstdc++ builds remain affected. No fixed release is available as of this review.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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.
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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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.
EPSS PROB
0.1%
EPSS %ILE
1st
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 2026-11-11). 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 or medium mission impact; Track* at high (mission-essential systems).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 or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (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 14, 2026

Advisory Details (2)

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

commit 1bda5079b1c8 (tesseract-ocr/tesseract)

Fix landed in tesseract-ocr/tesseract commit 1bda5079b1c8 — awaiting tagged release

https://github.com/tesseract-ocr/tesseract/commit/1bda5079b1c8a7e25f523486837426903d29ce84
GitHub advisoryMentions a patch (unverified)

ReadNormProtos stack buffer overflow · Advisory · tesseract-ocr/tesseract · GitHub

https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-5j2p-r5vc-q7f3

Vendor Advisories for CVE-2026-88047(2)

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

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhattesseract-0:4.1.1-11.el9_92026-11-11redhat
redhattesseract-0:5.3.4-11.el10_32026-11-11redhat
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-0:4.1.1-11.el9_82026-11-04redhat
redhattesseract-0:5.3.4-11.el10_22026-11-04redhat
ubuntutesseract-ocr-all (4.1.1-2ubuntu0.1~esm1) @ focal2026-10-28ubuntu

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

(6)

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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 109 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 9 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 0.1% · 1st percentile
  2. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-11-12 07:37 UTCEchelonGraph re-scored
  4. 2026-11-12 07:37 UTCVendor advisory
  5. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-11-04 21:53 UTCEchelonGraph re-scored
  11. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  13. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-28 12:09 UTCEchelonGraph re-scored
  18. 2026-10-28 12:09 UTCVendor advisory
  19. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-10-25 13:53 UTCEchelonGraph re-scored
  23. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 75 more
  1. 2026-10-20 17:52 UTCEchelonGraph re-scored
  2. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-18 03:03 UTCEchelonGraph re-scored
  6. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-13 05:04 UTCEchelonGraph re-scored
  11. 2026-10-13 05:04 UTCVendor advisory
  12. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  13. 2026-10-12 14:49 UTCEchelonGraph re-scored
  14. 2026-10-11 21:55 UTCVendor advisory
  15. 2026-10-11 19:15 UTCEchelonGraph re-scored
  16. 2026-10-11 16:32 UTCEchelonGraph re-scored
  17. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-10-11 13:49 UTCEchelonGraph re-scored
  19. 2026-10-11 10:13 UTCVendor advisory
  20. 2026-10-10 20:10 UTCEchelonGraph re-scored
  21. 2026-10-10 20:10 UTCVendor advisory
  22. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-10-10 08:09 UTCEchelonGraph re-scored
  24. 2026-10-10 08:09 UTCVendor advisory
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  26. 2026-10-08 23:47 UTCEchelonGraph re-scored
  27. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  28. 2026-10-08 10:13 UTCEchelonGraph re-scored
  29. 2026-10-08 10:13 UTCVendor advisory
  30. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  31. 2026-10-07 10:12 UTCVendor advisory
  32. 2026-10-06 22:31 UTCEchelonGraph re-scored
  33. 2026-10-06 22:31 UTCVendor advisory
  34. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  35. 2026-10-05 22:57 UTCEchelonGraph re-scored
  36. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  37. 2026-10-04 23:37 UTCEchelonGraph re-scored
  38. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  39. 2026-10-04 00:16 UTCEchelonGraph re-scored
  40. 2026-10-03 00:31 UTCEchelonGraph re-scored
  41. 2026-10-02 01:10 UTCEchelonGraph re-scored
  42. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  43. 2026-10-01 01:39 UTCEchelonGraph re-scored
  44. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  45. 2026-09-30 01:55 UTCEchelonGraph re-scored
  46. 2026-09-29 01:24 UTCEchelonGraph re-scored
  47. 2026-09-27 14:21 UTCEchelonGraph re-scored
  48. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  49. 2026-09-27 02:41 UTCEchelonGraph re-scored
  50. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-09-26 03:04 UTCEchelonGraph re-scored
  52. 2026-09-24 15:53 UTCEchelonGraph re-scored
  53. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  54. 2026-09-24 04:13 UTCEchelonGraph re-scored
  55. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  56. 2026-09-22 17:12 UTCEchelonGraph re-scored
  57. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  58. 2026-09-22 05:01 UTCEchelonGraph re-scored
  59. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  60. 2026-09-19 18:31 UTCEchelonGraph re-scored
  61. 2026-09-19 06:50 UTCEchelonGraph re-scored
  62. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  63. 2026-09-17 19:47 UTCEchelonGraph re-scored
  64. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  65. 2026-09-16 19:04 UTCEchelonGraph re-scored
  66. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  67. 2026-09-16 07:22 UTCEchelonGraph re-scored
  68. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  69. 2026-09-15 07:55 UTCEchelonGraph re-scored
  70. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-09-14 20:14 UTCEchelonGraph re-scored▼ 0.80
  72. 2026-09-14 20:13 UTCNVD updateCVSS v3 → 7.8
  73. 2026-09-13 20:06 UTCEchelonGraph re-scored
  74. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-09-12 20:45 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-88047?
CVE-2026-88047 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, Classify::ReadNormProtos in src/classify/normmatch.cpp parses the NORMPROTO component of a .traineddata file and uses std::istream::operator>>(char*) to extract a whitespace-delimited token into a fixed 61-byte stack buffer…
When was the CVE record for CVE-2026-88047 published?
The CVE record for CVE-2026-88047 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 14, 2026; the record at its source may have been updated since.
Is CVE-2026-88047 actively exploited?
CVE-2026-88047 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-88047?
CVE-2026-88047 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-88047?
A fix for CVE-2026-88047 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-88047 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-2026-88047

Explore →

Is Your Infrastructure Affected by CVE-2026-88047?

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