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
Vulnerability Title
Igor Pavlov 7-Zip 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
igor pavlov 7-zip是igor pavlov个人开发者开源的一款高压缩率的归档工具。 Igor Pavlov 7-Zip存在缓冲区错误漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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
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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-2026-19206
MZ Automation libiec61850 ASDU Element sv_subscriber.c SVRec - CVE-2026-18938
P11-kit: integer overflow in rpc attribute-array length calc - CVE-2026-19156
Chrome <151.0.7922.109 扩展扩展堆缓冲区溢出漏洞 - CVE-2026-19138
Chrome <151.0.7922.109堆缓冲区溢出漏洞 - CVE-2026-34501
Apache Portable Runtime Utility: Heap buffer overflow in APR
V. Comments for CVE-2026-14266
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