---
cve: "CVE-2026-88051"
severity: "HIGH"
cvss: 8.6
epss: "0.1%"
vendor: "tesseract-ocr"
kev: false
exploited: false
published: "2026-09-10 18:18:14"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T11:01:38+02:00"
---

# CVE-2026-88051

> 8.6 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 56e09ca12e751623fe796ce1554ce704bffd2ef0 (Commit)

## Referenzen

- <https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3>
- <https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-88051) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_