Service crash via unvalidated recoder code values
Published Sep 10, 2026 · Updated Sep 10, 2026
Out-of-bounds write in Tesseract 5.5.3 and earlier allows local users to crash OCR processes via crafted .traineddata files. RecodedCharID::DeSerialize accepts negative code values, causing ComputeCodeRange to create a zero-length range before SetupDecoder indexes is_valid_start_ with a wrapped negative index. The crafted recoder must be loaded by the LSTM engine; exploitation causes a wild-address crash or allocation failure rather than demonstrated controlled code execution.
Summary
What happened
Out-of-bounds write in Tesseract 5.5.3 and earlier allows local users to crash OCR processes via crafted .traineddata files. RecodedCharID::DeSerialize accepts negative code values, causing ComputeCodeRange to create a zero-length range before SetupDecoder indexes is_valid_start_ with a wrapped negative index. The crafted recoder must be loaded by the LSTM engine; exploitation causes a wild-address crash or allocation failure rather than demonstrated controlled code execution.
The record
- CVE
- CVE-2026-88050
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- Tesseract OCR
- Product
- Tesseract
- Classifications
- CWE-787, T1499
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=<= 5.5.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Crafted negative-code LSTM recoder proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo