CVE-2026-14266— 7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability
In-the-Wild Activity Observed github_trending · low
Possible ATT&CK Techniques 3AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application T1203 · Exploitation for Client ExecutionGet alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-14266
Vulnerability Information
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Vulnerability Title
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-14266
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2026-14266 (1)
- 🔗 ZDI-26-444 - TrendAI™ Zero Day Initiative™ (ZDI)x_research-advisory
IV. Related Vulnerabilities
Same product: 7-Zip
- CVE-2026-58052
7-Zip - Mark-of-the-Web Bypass via RAR5 Alternate Data Strea - CVE-2026-48112
GHSL-2026-122 7-Zip Ar SYMDEF OOB Read - CVE-2026-48111
GHSL-2026-121 7-Zip UEFI DEPEX OOB Read - CVE-2026-48104
GHSL-2026-120: 7-Zip SquashFS BlockToNode uninitialized heap - CVE-2026-48103
GHSL-2026-119 7-Zip WIM SecurityId OOB read
Same weakness: CWE-122
- CVE-2026-13307
Autel MaxiCharger AC Elite Home USB Heap-based Buffer Overfl - CVE-2026-67191
Xlight FTP Server < 3.9.5 Pre-Auth Heap Buffer Overflow via - CVE-2026-16463
DXF File Parsing Heap-Based Overflow in Autodesk AutoCAD - CVE-2026-48372
Format Plugins | Heap-based Buffer Overflow (CWE-122) - CVE-2026-55971
Apache Thrift: C++ ZLIB heap buffer overflow (write) in THea
V. Comments for CVE-2026-14266
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