CVE-2025-7011— Avast antivirus heap OOB when scanning a malformed zip file
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Gen Digital | Avast Antivirus | 25020100< 25021208 | affected |
| Gen Digital | Avast Business Antivirus | 25020100< 25021208 | affected |
| Gen Digital | Avast One | 25020100< 25021208 | affected |
| Gen Digital | AVG Antivirus | 25020100< 25021208 | affected |
| Gen Digital | Norton Antivirus | 25020100< 25021208 | affected |
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I. Basic Information for CVE-2025-7011
Vulnerability Information
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Vulnerability Title
Avast antivirus heap OOB when scanning a malformed zip file
Source: NVD (National Vulnerability Database)
Vulnerability Description
Heap out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed zip file containing XML may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds from 25020100 before 25021208. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Gen Digital Avast Antivirus 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gen Digital Avast Antivirus是美国Gen Digital公司的一个防病毒与网络安全软件。 Gen Digital Avast Antivirus存在缓冲区错误漏洞，该漏洞源于扫描包含XML的畸形zip文件时堆越界读取，可能导致本地执行代码或拒绝服务。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Gen Digital | Avast Antivirus | 25020100 ~ 25021208 | - | |
| Gen Digital | AVG Antivirus | 25020100 ~ 25021208 | - | |
| Gen Digital | Norton Antivirus | 25020100 ~ 25021208 | - | |
| Gen Digital | Avast One | 25020100 ~ 25021208 | - | |
| Gen Digital | Avast Business Antivirus | 25020100 ~ 25021208 | - |
II. Public POCs for CVE-2025-7011
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · Gen Digital · 2026-06-12 · 17 CVEs total
| CVE-2026-6676 | 7.8 HIGH | Avira antivirus engine heap buffer OOB write when scanning a malformed POSIX tar archive |
| CVE-2025-7003 | 7.8 HIGH | Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 1) |
| CVE-2025-7002 | 7.8 HIGH | Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 2) |
| CVE-2025-7008 | 7.8 HIGH | Avast antivirus heap buffer OOB read when scanning a malformed PE file |
| CVE-2025-7009 | 7.8 HIGH | Avast antivirus heap buffer OOB read when scanning a malformed PE file |
| CVE-2025-7017 | 7.8 HIGH | Avira antivirus engine heap buffer OOB read when scanning a malformed Windows MSI file |
| CVE-2025-7004 | 7.8 HIGH | Avast antivirus heap buffer OOB write when scanning a malformed PE file |
| CVE-2025-9032 | 7.8 HIGH | Avira antivirus engine heap buffer OOB read when scanning a malformed PE file |
| CVE-2025-9033 | 7.8 HIGH | Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 3) |
| CVE-2025-14098 | 7.8 HIGH | Avira antivirus engine heap buffer OOB write when scanning a malformed MS-DOS executable f |
| CVE-2026-12068 | 7.4 HIGH | Avira Password Manager credential disclosure via cross-origin autofill in Firefox |
| CVE-2025-7006 | 5.5 MEDIUM | Avast antivirus use of stack memory after free when scanning a malformed PE file |
| CVE-2025-7010 | 5.5 MEDIUM | Avast antivirus stack overflow when scanning a malformed PDF file |
| CVE-2025-7005 | 5.5 MEDIUM | Avast antivirus infinite recursion when scanning a malformed PE file |
| CVE-2025-7018 | 5.5 MEDIUM | Avira antivirus engine null pointer dereference when scanning a malformed PE file |
| CVE-2025-7019 | 5.5 MEDIUM | Avast antivirus stack overflow when scanning a malformed Office Open XML file |
IV. Related Vulnerabilities
Same product: Avast Antivirus
- CVE-2025-7019
Avast antivirus stack overflow when scanning a malformed Off - CVE-2025-7010
Avast antivirus stack overflow when scanning a malformed PDF - CVE-2025-7009
Avast antivirus heap buffer OOB read when scanning a malform - CVE-2025-7008
Avast antivirus heap buffer OOB read when scanning a malform - CVE-2025-7006
Avast antivirus use of stack memory after free when scanning
Same vendor: Gen Digital
- CVE-2026-12068
Avira Password Manager credential disclosure via cross-origi - CVE-2026-6676
Avira antivirus engine heap buffer OOB write when scanning a - CVE-2025-14098
Avira antivirus engine heap buffer OOB write when scanning a - CVE-2025-9033
Avira antivirus engine heap buffer OOB read when scanning a - CVE-2025-9032
Avira antivirus engine heap buffer OOB read when scanning a
Same weakness: CWE-125
- CVE-2025-15661
libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c - CVE-2026-56099
OpenBSD mpls_do_error Kernel Stack Memory Disclosure via MPL - CVE-2026-50643
Out‑of‑Bounds Read in 8cc - CVE-2026-30802
Out-of-bounds Read vulnerability in RTI Connext Micro (Core - CVE-2026-3894
Out-of-bounds Read vulnerability in RTI Connext Professional
V. Comments for CVE-2025-7011
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