CVE-2021-33451
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.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
What each source reports
NVD Score used
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
CVE-2021-33451- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
CVE-2021-33451- Updated
- 2026-11-02
EUVDEUVD-2021-20155 No score
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
EUVD-2021-20155- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-79hq-4grw-2q67
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
GHSA-79hq-4grw-2q67- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSV
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
CVE-2021-33451- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-33451
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
DEBIAN-CVE-2021-33451- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-33451
An issue was discovered in lrzip version 0.641. There are memory leaks in fill_buffer() in stream.c.
- Record
UBUNTU-CVE-2021-33451- CVSS 3.1
- 5.5 Medium
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
lrzipDebian:12 |
All versions, plus listed versions 0.651-20.651-30.660-1 |
None known |
lrzipDebian:13 |
All versions, plus listed versions 0.651-30.660-1 |
None known |
lrzipDebian:14 |
All versions, plus listed versions 0.651-30.660-1 |
None known |
lrzipUbuntu:Pro:14.04:LTS |
All versions, plus listed versions 0.608-20.616-10.616-1ubuntu0.1~esm0.616-1ubuntu0.1~esm10.616-1ubuntu0.1~esm2 |
None known |
lrzipUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 0.621-10.621-1ubuntu0.1~esm10.621-1ubuntu0.1~esm2 |
None known |
lrzipUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.631-10.631-1ubuntu0.1~esm10.631-1+deb9u1build0.18.04.10.631-1+deb9u3build0.18.04.1 |
None known |
lrzipUbuntu:20.04:LTS |
All versions, plus listed versions 0.631+git180528-10.631+git180528-1build10.631+git180528-1+deb10u1build0.20.04.1 |
None known |
lrzipUbuntu:22.04:LTS |
All versions, plus listed versions 0.641-10.651-20.651-2ubuntu0.22.04.1 |
None known |
lrzipUbuntu:24.04:LTS |
All versions, plus listed versions 0.651-2ubuntu1 |
None known |
lrzipUbuntu:25.10 |
All versions, plus listed versions 0.651-2ubuntu10.651-3 |
None known |
lrzipUbuntu:26.10 |
All versions, plus listed versions 0.660-1 |
None known |
lrzipUbuntu:26.04:LTS |
All versions, plus listed versions 0.651-30.651-3build10.660-1 |
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-2021-33451 is a medium vulnerability (CVSS 5.5) in Long Range Zip Project Range Zip, published July 26, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.