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CVE-2021-33480

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in...

5.5 Medium

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() 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
None
Integrity
None
Availability
High

Exploit likelihood

1.08%Up 0.2 points since Nov 18, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
CVE-2021-33480
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
CVE-2021-33480
Weakness
CWE-416
Updated
2026-11-02
EUVDEUVD-2021-20183 No score

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
EUVD-2021-20183
Updated
2026-11-03
GitHub AdvisoriesGHSA-882j-jq8h-6p6f 5.5

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in...

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
GHSA-882j-jq8h-6p6f
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-416
Updated
2026-11-02
OSV 5.5

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
CVE-2021-33480
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-33480 5.5

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
DEBIAN-CVE-2021-33480
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-33480 5.5

An use-after-free vulnerability was discovered in gocr through 0.53-20200802 in context_correction() in pgm2asc.c.

Record
UBUNTU-CVE-2021-33480
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gocr
Debian:12
 All versions, plus listed versions
0.52-60.52-6.10.52-6.1~exp1
 None known
gocr
Debian:13
 All versions, plus listed versions
0.52-6.1
 None known
gocr
Debian:14
 All versions, plus listed versions
0.52-6.1
 None known
gocr
Ubuntu:16.04:LTS
 All versions, plus listed versions
0.49-2
 None known
gocr
Ubuntu:18.04:LTS
 All versions, plus listed versions
0.49-20.49-2build1
 None known
gocr
Ubuntu:20.04:LTS
 All versions, plus listed versions
0.52-3
 None known
gocr
Ubuntu:22.04:LTS
 All versions, plus listed versions
0.52-3
 None known
gocr
Ubuntu:24.04:LTS
 All versions, plus listed versions
0.52-60.52-6.10.52-6.1build1
 None known
gocr
Ubuntu:25.10
 All versions, plus listed versions
0.52-6.1build1
 None known
gocr
Ubuntu:26.10
 All versions, plus listed versions
0.52-6.1build2
 None known
gocr
Ubuntu:26.04:LTS
 All versions, plus listed versions
0.52-6.1build10.52-6.1build2
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-33480 is a medium vulnerability (CVSS 5.5) 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 1.08%, the 65th percentile. No source names a fixed version.

References

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