CVE-2026-88051 Tesseract - Out of Bounds Read/Write

Tesseract <= 5.5.3 contains a heap out-of-bounds write caused by unchecked size_used_ and reserved fields in GenericVector::read when processing crafted TESSDATA_INTTEMP components, letting attackers cause heap corruption or crash remotely, exploit requires crafted .traineddata file.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read/Write
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to the latest version once a fix is released.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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