CVE-2026-5966Network attack vector

Authenticated file deletion via path traversal

Published Apr 20, 2026 · Updated Apr 20, 2026

Path traversal in TeamT5 ThreatSonar Anti-Ransomware 4.0.0 and earlier allows remote authenticated users to delete arbitrary files. TWCERT/CC and TeamT5 have not identified the affected web handler or disclosed how attacker-controlled paths escape its intended directory. Web-interface access and a valid account are required; deletion can alter system data or interrupt service, while file reading is not reported.

CVSS severity7.2
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in TeamT5 ThreatSonar Anti-Ransomware 4.0.0 and earlier allows remote authenticated users to delete arbitrary files. TWCERT/CC and TeamT5 have not identified the affected web handler or disclosed how attacker-controlled paths escape its intended directory. Web-interface access and a valid account are required; deletion can alter system data or interrupt service, while file reading is not reported.

The record

CVE
CVE-2026-5966
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
TeamT5
Product
ThreatSonar Anti-Ransomware
Classifications
CWE-23, CWE-22, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TeamT5 · ThreatSonar Anti-Ransomwareversion=0 <=4.0.0

Published CVSS scores

7.2TWCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
8.1TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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