Upstream information

CVE-2026-88052 at MITRE

Description

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, UNICHARSET::load_via_fgets in src/ccutil/unicharset.cpp trusts the declared unichar count as a loop bound and uses id as an unchecked index into the unichars vector. unichar_insert_backwards_compatible can leave the vector unchanged for an empty, duplicate, or already-encodable representation, causing id to become larger than unichars.size(). Subsequent set_* calls and the write to unichars[id].properties.enabled then write UNICHAR_PROPERTIES beyond the vector during initialization in both the default LSTM and legacy engines, causing heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 7.8 7.8
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local Local
Attack Complexity Low Low
Privileges Required None None
User Interaction Required Required
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1280933 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Leap 16.0
  • libtesseract5 >= 5.5.3-bp160.1.1
  • libtesseract5-x86-64-v3 >= 5.5.3-bp160.1.1
  • tesseract-ocr >= 5.5.3-bp160.1.1
  • tesseract-ocr-common >= 5.5.3-bp160.1.1
  • tesseract-ocr-devel >= 5.5.3-bp160.1.1
 Patchnames:
openSUSE-Leap-16.0-packagehub-626
openSUSE Tumbleweed
  • libtesseract5 >= 5.5.3-2.1
  • libtesseract5-x86-64-v3 >= 5.5.3-2.1
  • tesseract-ocr >= 5.5.3-2.1
  • tesseract-ocr-common >= 5.5.3-2.1
  • tesseract-ocr-devel >= 5.5.3-2.1
 Patchnames:
openSUSE-Tumbleweed-2026-11887

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Module for Package Hub 15 SP7 tesseract-ocr Analysis

SUSE Timeline for this CVE

CVE page created: Thu Sep 17 16:08:28 2026
CVE page last modified: Fri Sep 25 12:55:34 2026