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CVE-2026-6851— Improper link resolution before file access in Bitdefender Total Security via Link Following (VA-13681)

Quick assessment

Affected
Bitdefender Total Security
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.

Bitdefender total security是罗马尼亚Bitdefender公司的一款全方位电脑安全防护软件。 Bitdefender total security 27.0.58.315之前版本存在后置链接漏洞，该漏洞源于文件粉碎模块中在文件访问之前存在不正确的链接解析问题，允许低权限本地用户通过符号链接利用竞争条件导致权限提升。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.15% · P3

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 2

VendorProduct Version RangeStatus
Bitdefender Internet Security < 27.0.58.315 affected
Bitdefender Total Security < 27.0.58.315 affected
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I. Basic Information for CVE-2026-6851

Vulnerability Information
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Vulnerability Title
Improper link resolution before file access in Bitdefender Total Security via Link Following (VA-13681)
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper link resolution before file access ('link following') vulnerability in the File Shredder module as used in Bitdefender Total Security and Internet Security on Windows allows a less-privileged local user to elevate rights by leveraging a race conditions via Symbolic Links. This issue affects Total Security: before 27.0.58.315; Internet Security: before 27.0.58.315.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Bitdefender total security 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bitdefender total security是罗马尼亚Bitdefender公司的一款全方位电脑安全防护软件。 Bitdefender total security 27.0.58.315之前版本存在后置链接漏洞，该漏洞源于文件粉碎模块中在文件访问之前存在不正确的链接解析问题，允许低权限本地用户通过符号链接利用竞争条件导致权限提升。
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
Bitdefender Total Security 0 ~ 27.0.58.315 -
Bitdefender Internet Security 0 ~ 27.0.58.315 -

II. Public POCs for CVE-2026-6851

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III. Intelligence Information for CVE-2026-6851

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Vendor Advisories for CVE-2026-6851 (1)

IV. Related Vulnerabilities

Same product: Total Security
Same vendor: Bitdefender
Same weakness: CWE-59

V. Comments for CVE-2026-6851

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