ckolivas lrzip up to 0.651 stream.c lzma_decompress_buf use after free
Summary
A vulnerability categorized as critical has been discovered in ckolivas lrzip up to 0.651. Affected is the function lzma_decompress_buf of the file stream.c. Executing a manipulation can lead to use after free.
This vulnerability is handled as CVE-2025-15570. It is possible to launch the attack on the local host. Additionally, an exploit exists.
The project was informed of the problem early through an issue report but has not responded yet.
Details
A vulnerability classified as critical was found in ckolivas lrzip up to 0.651. This vulnerability affects the function lzma_decompress_buf of the file stream.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.
The advisory is available at github.com. This vulnerability was named CVE-2025-15570. The exploitation appears to be easy. Local access is required to approach this attack. Technical details and also a public exploit are known.
It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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Product
Vendor
Name
Version
Website
- Product: https://github.com/ckolivas/lrzip/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 6.1VulDB Meta Temp Score: 6.0
VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔒
CNA Base Score: 5.3
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: Partially
Local: Yes
Remote: No
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
02/08/2026 Advisory disclosed02/08/2026 VulDB entry created
02/27/2026 VulDB entry last update
Sources
Product: github.comAdvisory: 262
Status: Not defined
CVE: CVE-2025-15570 (🔒)
GCVE (CVE): GCVE-0-2025-15570
GCVE (VulDB): GCVE-100-344926
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/08/2026 09:18Updated: 02/27/2026 19:34
Changes: 02/08/2026 09:18 (56), 02/10/2026 14:44 (2), 02/11/2026 12:43 (30), 02/27/2026 19:34 (11)
Complete: 🔍
Submitter: ziiiro
Cache ID: 216::103
Submit
Accepted
- Submit #752595: ckolivas lrzip 0.651 Memory Corruption (by ziiiro)
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