The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-26-444/ |
|
Wed, 29 Jul 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
7-zip
7-zip 7-zip |
|
| Vendors & Products |
7-zip
7-zip 7-zip |
Wed, 29 Jul 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 29 Jul 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169. | |
| Title | 7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability | |
| Weaknesses | CWE-122 | |
| References |
| |
| Metrics |
cvssV3_0
|
Status: PUBLISHED
Assigner: zdi
Published:
Updated: 2026-07-29T18:09:11.010Z
Reserved: 2026-06-30T18:43:50.027Z
Link: CVE-2026-14266
Updated: 2026-07-29T17:30:32.742Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-29T18:30:05Z
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CWE-122
Heap-based Buffer Overflow