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VulnerabilityPublished

CVE-2025-3771: Trellix System Information Reporter · Link Following

Affects Trellix System Information ReporterSource CVE Database V5

0

Not known to be exploited · CVSS 7.2 High.

Data as of 26 Oct 2026, 09:08 UTC

CVSS 4.0 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Trellix System Information ReporterAffected
  • =1.0.3
Fixed in–

AI-suggested

To mitigate this vulnerability, European organizations should first verify if Trellix System Information Reporter version 1.0.3 is in use within their environment. Until an official patch is released, organizations should restrict local user permissions to prevent untrusted users from creating junction symlinks or writing to directories used by the System Information Reporter. Implement strict access controls on directories where registry backups are stored to prevent unauthorized file creation or modification. Employ endpoint detection and response (EDR) solutions to monitor for suspicious symlink creation or unusual file write activities related to the System Information Reporter. Additionally, conduct regular audits of filesystem permissions and symlink usage to detect potential exploitation attempts. Organizations should also consider isolating or limiting the use of the affected tool on high-risk systems and educate users about the risks of local privilege escalation attacks. Once available, promptly apply vendor patches or updates addressing this vulnerability. Finally, incorporate this vulnerability into incident response plans to quickly identify and remediate exploitation attempts.

Description

A path or symbolic link manipulation vulnerability in SIR 1.0.3 and prior versions allows an authenticated non-admin local user to overwrite system files with SIR backup files, which can potentially cause a system crash. This was achieved by adding a malicious entry to the registry under the Trellix SIR registry folder or via policy or with a junction symbolic link to files that the user would not normally have permission to acces

References

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