# CVE-2026-88052: tesseract-devel: A commercial quality OCR engine originally developed at HP between 1985 and 1995 CVE-2026-88052 is fixed in 19 products on 1 platform, first by libtesseract5 5.5.0-1ubuntu0.1~esm1, released September 10, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-88052 - Priority: High - CVSS: 8.4 (important) - EPSS: 0.0017 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 10, 2026 ## Description A commercial quality OCR engine originally developed at HP between 1985 and 1995. In 1995, this engine was among the top 3 evaluated by UNLV. It was open-sourced by HP and UNLV in 2005. Security Fix(es): * tesseract: Tesseract: Heap out-of-bounds write/read leading to information disclosure via crafted data (CVE-2026-88048) * tesseract: Tesseract: Stack buffer overflow via crafted .traineddata file (CVE-2026-88047) * tesseract: Tesseract: Heap out-of-bounds write allows arbitrary code execution or denial of service (CVE-2026-88049) * tesseract: Tesseract: Heap out-of-bounds write via crafted .traineddata model (CVE-2026-88051) * tesseract: Tesseract: Heap out-of-bounds write leads to heap corruption via crafted data file (CVE-2026-88053) * tesseract: Tesseract: Heap out-of-bounds write can lead to arbitrary code execution (CVE-2026-88052) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libtesseract4 Ubuntu 18.04.6 LTS (bionic) | 4.00~git2288-10f4998a-2ubuntu0.1~esm1 | [libtesseract4 4.00~git2288-10f4998a-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libtesseract4-4.00-git2288-10f4998a-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | libtesseract4 Ubuntu 20.04 LTS (focal) | 4.1.1-2ubuntu0.1~esm1 | [libtesseract4 4.1.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libtesseract4-4.1.1-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | libtesseract4 Ubuntu 22.04.1 LTS (jammy) | 4.1.1-2.1ubuntu0.1~esm1 | [libtesseract4 4.1.1-2.1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libtesseract4-4.1.1-2.1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | libtesseract5 Ubuntu 24.04.5 LTS (noble) | 5.3.4-1ubuntu0.1~esm1 | [libtesseract5 5.3.4-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libtesseract5-5.3.4-1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | libtesseract5 Ubuntu 26.04.1 LTS (resolute) | 5.5.0-1ubuntu0.1~esm1 | [libtesseract5 5.5.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libtesseract5-5.5.0-1ubuntu0.1-esm1.md) | Sep 10, 2026 | | Linux | mingw32-tesseract Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | mingw32-tesseract-debuginfo Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | mingw32-tesseract-tools Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | mingw64-tesseract Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | mingw64-tesseract-debuginfo Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | mingw64-tesseract-tools Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract RHEL 10 | 5.3.4-11.el10_2 | [RHSA-2026:95085](https://patchblox.com/security/data/fix/linux/rhsa-2026-95085.md) | Sep 10, 2026 | | Linux | tesseract almalinux 10 | 5.3.4-11.el10_2 | [ALSA-2026:95085](https://patchblox.com/security/data/fix/linux/alsa-2026-95085.md) | Nov 7, 2026 | | Linux | tesseract almalinux 8 | 4.1.1-7.el8_10 | [ALSA-2026:95725](https://patchblox.com/security/data/fix/linux/alsa-2026-95725.md) | Nov 7, 2026 | | Linux | tesseract ol 10 | 0:5.3.4-11.el10_2 | [ELSA-2026-95085](https://patchblox.com/security/data/fix/linux/elsa-2026-95085.md) | Nov 7, 2026 | | Linux | tesseract ol 8 | 0:4.1.1-7.el8_10 | [ELSA-2026-95725](https://patchblox.com/security/data/fix/linux/elsa-2026-95725.md) | Nov 7, 2026 | | Linux | tesseract ol 9 | 0:4.1.1-11.el9_8 | [ELSA-2026-95086](https://patchblox.com/security/data/fix/linux/elsa-2026-95086.md) | Nov 7, 2026 | | Linux | tesseract rocky 10 | 0:5.3.4-11.el10_2 | [RLSA-2026:95085](https://patchblox.com/security/data/fix/linux/rlsa-2026-95085.md) | Nov 7, 2026 | | Linux | tesseract rocky 8 | 0:4.1.1-7.el8_10 | [RLSA-2026:95725](https://patchblox.com/security/data/fix/linux/rlsa-2026-95725.md) | Nov 8, 2026 | | Linux | tesseract rocky 9 | 0:4.1.1-11.el9_8 | [RLSA-2026:95086](https://patchblox.com/security/data/fix/linux/rlsa-2026-95086.md) | Nov 7, 2026 | | Linux | tesseract-common Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-debuginfo Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-debugsource Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-devel Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-devel almalinux 10 | 5.3.4-11.el10_2 | [ALSA-2026:95085](https://patchblox.com/security/data/fix/linux/alsa-2026-95085.md) | Nov 7, 2026 | | Linux | tesseract-devel almalinux 8 | 4.1.1-7.el8_10 | [ALSA-2026:95725](https://patchblox.com/security/data/fix/linux/alsa-2026-95725.md) | Nov 7, 2026 | | Linux | tesseract-devel almalinux 9 | 4.1.1-11.el9_8 | [ALSA-2026:95086](https://patchblox.com/security/data/fix/linux/alsa-2026-95086.md) | Nov 7, 2026 | | Linux | tesseract-devel ol 10 | 0:5.3.4-11.el10_2 | [ELSA-2026-95085](https://patchblox.com/security/data/fix/linux/elsa-2026-95085.md) | Nov 7, 2026 | | Linux | tesseract-devel ol 8 | 0:4.1.1-7.el8_10 | [ELSA-2026-95725](https://patchblox.com/security/data/fix/linux/elsa-2026-95725.md) | Nov 7, 2026 | | Linux | tesseract-devel ol 9 | 0:4.1.1-11.el9_8 | [ELSA-2026-95086](https://patchblox.com/security/data/fix/linux/elsa-2026-95086.md) | Nov 7, 2026 | | Linux | tesseract-libs Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-libs-debuginfo Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-ocr Ubuntu 18.04.6 LTS (bionic) | 4.00~git2288-10f4998a-2ubuntu0.1~esm1 | [tesseract-ocr 4.00~git2288-10f4998a-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tesseract-ocr-4.00-git2288-10f4998a-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr Ubuntu 20.04 LTS (focal) | 4.1.1-2ubuntu0.1~esm1 | [tesseract-ocr 4.1.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-tesseract-ocr-4.1.1-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr Ubuntu 22.04.1 LTS (jammy) | 4.1.1-2.1ubuntu0.1~esm1 | [tesseract-ocr 4.1.1-2.1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-tesseract-ocr-4.1.1-2.1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr Ubuntu 24.04.5 LTS (noble) | 5.3.4-1ubuntu0.1~esm1 | [tesseract-ocr 5.3.4-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-tesseract-ocr-5.3.4-1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr Ubuntu 26.04.1 LTS (resolute) | 5.5.0-1ubuntu0.1~esm1 | [tesseract-ocr 5.5.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-tesseract-ocr-5.5.0-1ubuntu0.1-esm1.md) | Sep 10, 2026 | | Linux | tesseract-ocr opensuse-leap 16.0 | 5.5.3-bp160.1.1 | [OPENSUSE-SU-2026:21957-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21957-1.md) | Sep 24, 2026 | | Linux | tesseract-ocr-all Ubuntu 18.04.6 LTS (bionic) | 4.00~git2288-10f4998a-2ubuntu0.1~esm1 | [tesseract-ocr-all 4.00~git2288-10f4998a-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tesseract-ocr-all-4.00-git2288-10f4998a-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr-all Ubuntu 20.04 LTS (focal) | 4.1.1-2ubuntu0.1~esm1 | [tesseract-ocr-all 4.1.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-tesseract-ocr-all-4.1.1-2ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr-all Ubuntu 22.04.1 LTS (jammy) | 4.1.1-2.1ubuntu0.1~esm1 | [tesseract-ocr-all 4.1.1-2.1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-tesseract-ocr-all-4.1.1-2.1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr-all Ubuntu 24.04.5 LTS (noble) | 5.3.4-1ubuntu0.1~esm1 | [tesseract-ocr-all 5.3.4-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-tesseract-ocr-all-5.3.4-1ubuntu0.1-esm1.md) | Oct 7, 2026 | | Linux | tesseract-ocr-all Ubuntu 26.04.1 LTS (resolute) | 5.5.0-1ubuntu0.1~esm1 | [tesseract-ocr-all 5.5.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-tesseract-ocr-all-5.5.0-1ubuntu0.1-esm1.md) | Sep 10, 2026 | | Linux | tesseract-tools Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | | Linux | tesseract-tools-debuginfo Fedora 43 | 5.5.3-2.fc43 | [FEDORA-2026-4585ABA520](https://patchblox.com/security/data/fix/linux/fedora-2026-4585aba520.md) | Sep 21, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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