---
cve: "CVE-2026-73066"
severity: "MEDIUM"
cvss: 6.8
epss: "13%"
vendor: "tesseract-ocr"
kev: false
exploited: false
published: "2026-08-11 15:17:38"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T02:26:30+02:00"
---

# CVE-2026-73066

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/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 |

## Patch verfügbar (OSV)

- 2f4d2f4bf45c363785d7bf1da29b6628f8939a72 (Commit)
- db0ec62f81b0737fbbe184d8fea40af5738f8eef (Commit)

## Referenzen

- <https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8>
- <https://github.com/tesseract-ocr/tesseract/pull/4588>
- <https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72>
- <https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73066) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_