A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421 through 12.5.0.2434)
Windows DAEMON Tools Lite builds 12.5.0.2421 through 12.5.0.2434, installed from the vendor's website between April 8 and May 5, 2026, were compromised in a supply chain attack. Fixed in 12.6.0.2445.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 2.6.0.*
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
DAEMON Tools Lite for Windows, a disc imaging and virtual drive program, was affected when its official installers from the vendor's website were tampered with during a supply chain attack. Because the malicious files carried a valid digital signature from the legitimate developer, they could evade standard security checks and potentially give attackers access to affected computers.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421 through 12.5.0.2434), distributed from the legitimate website daemon-tools.cc between approximately April 8, 2026, and May 5, 2026. Attackers gained unauthorized access to the vendor's (AVB Disc Soft) build or distribution infrastructure and trojanized three binaries: DTHelper.exe, DiscSoftBusServiceLite.exe, and DTShellHlp.exe. These files were digitally signed with the legitimate AVB Disc Soft code-signing certificate, allowing the malicious installers to appear trustworthy and bypass signature-based detection.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- Record last updated
- CISA remediation deadline
Due date for US federal agencies to patch
Affected versions
- AVB Disc Soft DAEMON Tools Lite
From 12.5.0.2421 · fixed in 2.6.0.*
References 2
securelist.com
blog.daemon-tools.cc
Questions about CVE-2026-8398
What does this mean?
The compromised installers contained trojanized binaries that activate a backdoor at startup. The backdoor can run shell commands through cmd.exe, download and launch further payloads, and collect system information such as hostname, MAC address, and lists of running processes and installed software.Source: securelist.com, blog.daemon-tools.cc
Am I affected, and how do I check?
Windows DAEMON Tools Lite versions 12.5.0.2421 through 12.5.0.2434 are affected, but only the compromised builds obtained from the vendor's legitimate download website during April 8 to May 5, 2026. Compare the installed version number against that range and check when and where the installer was downloaded.Source: securelist.com, blog.daemon-tools.cc
What should I do about it?
Upgrade to 12.6.0.2445, the latest version, which no longer exhibits the behavior associated with the incident.Source: securelist.com, blog.daemon-tools.cc
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-05-27, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data