Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-8351— Avira antivirus engine heap buffer OOB read when scanning a malformed file

Quick assessment

Affected
Gen Digital Avira Antivirus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Avast Antivirus是捷克Avast公司的一套杀毒软件。 Avast Antivirus 8.3.70.94版本至8.3.70.98之前版本存在安全漏洞，该漏洞源于堆缓冲区溢出和越界读取，可能导致本地代码执行或拒绝服务。

CVSS 7.8 · High EPSS 0.16% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
Gen Digital Avira Antivirus < 8.3.70.98 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-8351

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Avira antivirus engine heap buffer OOB read when scanning a malformed file
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avira Antivirus engine when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.98.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Avast Antivirus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avast Antivirus是捷克Avast公司的一套杀毒软件。 Avast Antivirus 8.3.70.94版本至8.3.70.98之前版本存在安全漏洞，该漏洞源于堆缓冲区溢出和越界读取，可能导致本地代码执行或拒绝服务。
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)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Gen Digital Avira Antivirus 0 ~ 8.3.70.98 -

II. Public POCs for CVE-2025-8351

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-8351

请登录查看更多情报信息。

IV. Related Vulnerabilities

Same product: Avira Antivirus
Same vendor: Gen Digital
Same weakness: CWE-122

V. Comments for CVE-2025-8351

No comments yet

Leave a comment