An issue was discovered in lrzip version 0.641.
Priority LOW 34CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
An issue was discovered in lrzip version 0.641. There is a use-after-free in ucompthread() in stream.c:1538.
Why it matters now
EPSS 0.00365 30th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:long_range_zip_project:long_range_zip:0.641:*:*:*:*:*:*:* | 0.641 | Vulnerable | Long Range Zip Project |
- cpe:2.3:a:long_range_zip_project:long_range_zip:0.641:*:*:*:*:*:*:* Versions 0.641 Vulnerable ·Long Range Zip Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33453
- 2026-10-03 Alias added: GHSA-5xh9-fg67-82m2
References
More Long Range Zip Project Long Range Zip vulnerabilities
- TI-2023-20769 lrzip v0.651 was discovered to contain a heap overflow via the… CVSS 3.1MEDIUM 5.5
- TI-2018-07555 In Long Range Zip (aka lrzip) 0.631, there is a use-after-free in the lzma_decompress_buf… CVSS 3.0CRITICAL 9.8
- TI-2017-06352 The read_1g function in stream.c in liblrzip.so in lrzip 0.631 allows remote attackers to… CVSS 3.1HIGH 7.8
- TI-2018-08217 In Long Range Zip (aka lrzip) 0.631, there is a use-after-free in read_stream in… CVSS 3.1MEDIUM 6.5
- TI-2018-04186 In Long Range Zip (aka lrzip) 0.631, there is an infinite loop and application hang in… CVSS 3.1MEDIUM 5.5
- TI-2017-06355 The bufRead::get() function in libzpaq/libzpaq.h in liblrzip.so in lrzip 0.631 allows… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-33453 · CVE Program
- CVE-2021-33453 · NVD
- FIRST EPSS
- GHSA-5xh9-fg67-82m2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences