CyberSecBulletin
CVE-2025-7073NVD status: Analyzed

Total Security: Improper Link Resolution Before File Access

Published Updated By the CyberSecBulletin desk

CVE-2025-7073 is a high-severity improper link resolution before file access vulnerability in Total Security from Bitdefender, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 27.0.47.241 as the first without the flaw, so updating Total Security to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.18% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Total Security to 27.0.47.241 or a later version.
  2. Update Internet Security to 27.0.47.241 or a later version.
  3. Update Antivirus Plus to 27.0.47.241 or a later version.
  4. Read the advisory on bitdefender.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
BitdefenderTotal Securitybefore 27.0.47.24127.0.47.241
BitdefenderInternet Securitybefore 27.0.47.24127.0.47.241
BitdefenderAntivirus Plusbefore 27.0.47.24127.0.47.241
BitdefenderAntivirusbefore 30.0.25.7730.0.25.77
BitdefenderEndpoint Security Toolsbefore 7.9.20.5157.9.20.515

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 4.08.8HighCNA (bitdefender.com)
CVSS 3.17.8HighNVD

Official description

A local privilege escalation vulnerability in Bitdefender Total Security versions prior to 27.0.47.241 allows low-privileged attackers to elevate privileges. The issue arises from bdservicehost.exe deleting files from a user-writable directory (C:\ProgramData\Atc\Feedback) without proper symbolic link validation, enabling arbitrary file deletion. This issue is chained with a file copy operation during network events and a filter driver bypass via DLL injection to achieve arbitrary file copy and code execution as elevated user.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Link Resolution Before File Access

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

How developers prevent this class of flaw

  • Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

More Improper Link Resolution Before File Access vulnerabilities (CWE-59)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Total Security

All Total Security vulnerabilities

Recent Improper Link Resolution Before File Access vulnerabilities

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