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.
References
| Link | Resource |
|---|---|
| https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0 | Patch |
| https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3 | Exploit Mitigation Vendor Advisory |
| https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3 | Exploit Mitigation Vendor Advisory |
Configurations
History
16 Sep 2026, 16:29
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:tesseract-ocr:tesseract_ocr:*:*:*:*:*:*:*:* | |
| First Time |
Tesseract-ocr tesseract Ocr
Tesseract-ocr |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0 - Patch | |
| References | () https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3 - Exploit, Mitigation, Vendor Advisory |
Information
Published : 2026-09-10 18:18
Updated : 2026-09-16 16:29
NVD link : CVE-2026-88051
Mitre link : CVE-2026-88051
CVE.ORG link : CVE-2026-88051
JSON object : View
Products Affected
tesseract-ocr
- tesseract_ocr
CWE
CWE-787
Out-of-bounds Write