High [CVE-2026-88052] Heap out-of-bounds write can lead to arbitrary code execution
This high-severity Red Hat Linux advisory covers CVE-2026-88052 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. The UNICHARSET::load_via_fgets function incorrectly trusts a declared character count, which can lead to an out-of-bounds write in memory.
A remote attacker could exploit this vulnerability by providing a specially crafted input, potentially causing heap corruption, a denial of service, or 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 vulnerability, avoid processing untrusted or malicious image and document files with Tesseract. If Tesseract is not essential for system operations, consider removing the `tesseract` package to eliminate the attack surface. If the `tesseract` package is removed, ensure that any dependent applications or services are not adversely affected.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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