Skip to content
EXYS
Back to the CVEs

CVE-2026-88048

7.1, high

Tesseract-ocr tesseract Out-of-Bounds Read Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.1, high high CVSS v3.1
EPSS, next 30 days
0.2% higher than 5.9% of scored CVEs
Exploitation
No public evidence
Published
10 Sept 2026a month ago

Description

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, FullyConnected::DeSerialize in src/lstm/fullyconnected.cpp does not validate the deserialized layer scalars ni_ and no_ against the weight-matrix dimensions. During FullyConnected::Forward, MatrixDotVector in src/lstm/weightmatrix.cpp writes w.dim1() results into temp_line, which is sized from no_, and reads w.dim2() minus one inputs from curr_input, which is sized from ni_. A crafted .traineddata NT_SOFTMAX layer can therefore use inconsistent dimensions to cause a heap out-of-bounds write and read on the default LSTM engine, resulting in heap corruption, a crash, information disclosure, or potentially controlled corruption. No fixed release is available as of this review.

Details

Vendor
Tesseract-ocr
Product
tesseract
Weakness
CWE-125 (opens in a new tab)
Status
Analyzed
Updated
14 Sept 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

References 2

Patches and fixes 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Tesseract-ocr CVEs

Every Tesseract-ocr CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-88047 Tesseract-ocr tesseract Stack-based Buffer Overflow Vulnerability EPSS 0.1% 7.8, high
  • CVE-2026-88051 Tesseract-ocr tesseract Out-of-Bounds Write Vulnerability EPSS 0.2% 7.8, high
  • CVE-2026-88053 Tesseract-ocr tesseract Out-of-Bounds Write Vulnerability EPSS 0.2% 7.8, high

Beyond this page

Is CVE-2026-88048 in your network?

This page tells you how dangerous CVE-2026-88048 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-88048 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.