CVE-2021-33479
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in...
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
CVE-2021-33479- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
CVE List No score
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
CVE-2021-33479- Weakness
- CWE-119
- Updated
- 2026-11-02
EUVDEUVD-2021-20182 No score
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
EUVD-2021-20182- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cfqc-x96c-8xxg
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in...
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
GHSA-cfqc-x96c-8xxg- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
OSV
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
CVE-2021-33479- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-33479
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
DEBIAN-CVE-2021-33479- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-33479
A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.
- Record
UBUNTU-CVE-2021-33479- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gocrDebian:12 |
All versions, plus listed versions 0.52-60.52-6.10.52-6.1~exp1 |
None known |
gocrDebian:13 |
All versions, plus listed versions 0.52-6.1 |
None known |
gocrDebian:14 |
All versions, plus listed versions 0.52-6.1 |
None known |
gocrUbuntu:16.04:LTS |
All versions, plus listed versions 0.49-2 |
None known |
gocrUbuntu:18.04:LTS |
All versions, plus listed versions 0.49-20.49-2build1 |
None known |
gocrUbuntu:20.04:LTS |
All versions, plus listed versions 0.52-3 |
None known |
gocrUbuntu:22.04:LTS |
All versions, plus listed versions 0.52-3 |
None known |
gocrUbuntu:24.04:LTS |
All versions, plus listed versions 0.52-60.52-6.10.52-6.1build1 |
None known |
gocrUbuntu:25.10 |
All versions, plus listed versions 0.52-6.1build1 |
None known |
gocrUbuntu:26.10 |
All versions, plus listed versions 0.52-6.1build2 |
None known |
gocrUbuntu:26.04:LTS |
All versions, plus listed versions 0.52-6.1build10.52-6.1build2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33479 is a high vulnerability (CVSS 7.8) in Optical Character Recognition Project Character Recognition, published November 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 68th percentile. No source names a fixed version.
References
bugzilla.redhat.com/show_bug.cgi?id=1962861
sourceforge.net/p/jocr/bugs/39
security.gentoo.org/glsa/202401-28
nvd.nist.gov/vuln/detail/CVE-2021-33479
github.com/advisories/GHSA-cfqc-x96c-8xxg
security-tracker.debian.org/tracker/CVE-2021-33479
ubuntu.com/security/CVE-2021-33479
cve.org/CVERecord?id=CVE-2021-33479