CVE-2026-88052 Tesseract - Buffer Overflow

Tesseract <= 5.5.3 contains a buffer overflow caused by unchecked indexing in UNICHARSET::load_via_fgets, letting attackers cause heap corruption or crash, exploit requires crafted input file.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-129

Vendor fix

Update to a fixed version once available or monitor for patches addressing this issue.

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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