High [CVE-2026-88051] Heap out-of-bounds write via crafted.traineddata model
This high-severity Red Hat Linux advisory covers CVE-2026-88051 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
A flaw was found in Tesseract, an open-source Optical Character Recognition (OCR) engine. A heap out-of-bounds write vulnerability exists in the GenericVector::read function when processing a specially crafted.traineddata model.
By manipulating the reserved and size_used_ fields, a local attacker can cause heap corruption, a crash, or potentially controlled corruption, which could lead to arbitrary code execution. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: tesseract.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- To mitigate this issue, avoid processing `.traineddata` model files from untrusted or unknown sources. Ensure that Tesseract only processes models from trusted origins. If Tesseract is not required, consider removing the `tesseract` package to eliminate the attack surface.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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