CVE catalog
CVE-2021-36081
tesseract: CVE-2021-36081
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.89% · Oct 25, 2026
Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tesseract | sid | 5.5.0-1.1 | fixed |
| Debian | tesseract | forky | 5.5.0-1.1 | fixed |
| Debian | tesseract | trixie | 5.5.0-1 | fixed |
| Debian | tesseract | bookworm | 5.3.0-2 | fixed |
| Cpe | tesseract_ocr | Not reported | Not reported | unknown |
| Ubuntu | tesseract | pro | 4.1.1-2.1 | vulnerable |
| Ubuntu | tesseract | pro | 4.1.1-2.1build1 | vulnerable |
| Ubuntu | tesseract | pro | 4.1.1-2.1ubuntu0.1~esm1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tesseract | source | sid | 5.1.0-1 | not yet assigned | Not reported | [990529] |
| Debian | tesseract | source | forky | 5.1.0-1 | not yet assigned | Not reported | [990529] |
| Debian | tesseract | source | trixie | 5.1.0-1 | not yet assigned | Not reported | [990529] |
| Debian | tesseract | source | bookworm | 5.1.0-1 | not yet assigned | Not reported | [990529] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libtesseract5]Fixed
Source package: [tesseract]
Details (2)
5.3.0-2· amd64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
5.3.0-2· arm64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
- [libtesseract-dev]Fixed
Source package: [tesseract]
Details (2)
5.3.0-2· amd64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
5.3.0-2· arm64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
- [tesseract-ocr]Fixed
Source package: [tesseract]
Details (2)
5.3.0-2· amd64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
5.3.0-2· arm64 · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
- [tesseract-ocr-all]Fixed
Source package: [tesseract]
Details (2)
5.3.0-2· all · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
5.3.0-2· all · bookwormFixed · Fixed:
5.1.0-1dsa · tesseract · debian · bookworm; dsa · tesseract · debian · 12
[Debian 13 (Trixie)]
- [libtesseract5]Fixed
Source package: [tesseract]
Details (2)
5.5.0-1+b1· amd64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
5.5.0-1+b1· arm64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
- [libtesseract-dev]Fixed
Source package: [tesseract]
Details (2)
5.5.0-1+b1· amd64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
5.5.0-1+b1· arm64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
- [tesseract-ocr]Fixed
Source package: [tesseract]
Details (2)
5.5.0-1+b1· amd64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
5.5.0-1+b1· arm64 · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
- [tesseract-ocr-all]Fixed
Source package: [tesseract]
Details (2)
5.5.0-1· all · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
5.5.0-1· all · trixieFixed · Fixed:
5.1.0-1dsa · tesseract · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2021-36081]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-36081]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-36081]
- [https://security-tracker.debian.org/tracker/CVE-2021-36081]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]