---
cve: "CVE-2026-88050"
severity: "MEDIUM"
cvss: 6.9
epss: "0.2%"
vendor: "tesseract-ocr"
kev: false
exploited: false
published: "2026-09-10 17:17:09"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T01:15:39+02:00"
---

# CVE-2026-88050

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and reliably causes a wild-address crash or allocation failure on the default LSTM engine. 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:N/VI:N/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)

- c94a5532ee04db5a4919542832fd94caee5ea58f (Commit)

## Referenzen

- <https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7v9h-3q3m-w68g>
- <https://github.com/tesseract-ocr/tesseract/commit/c94a5532ee04db5a4919542832fd94caee5ea58f>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-88050) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_