CVE-2007-0927: uTorrent 1.6 heap buffer overflow via crafted torrent announce header

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 20 September 2026. Confidence: medium.

high priorityRemote code execution with no authentication and public exploit material, though it requires the victim to open a crafted torrent file and affects an old client version.

What it is

uTorrent 1.6 contains a heap-based buffer overflow triggered when processing a torrent file with a crafted announce header. A remote attacker can deliver such a file to a victim, and successful exploitation can lead to arbitrary code execution in the context of the uTorrent process. The record does not state which later versions fix the issue.

Impact

An attacker gains the ability to execute arbitrary code on the victim's machine, with the privileges of the uTorrent process. This can lead to full compromise of the user's system and data.

Attack surface

The flaw is reached remotely over the network when uTorrent parses a malicious torrent file, per the AV:N vector. No authentication is required, but the victim must open or load the crafted torrent file, which constitutes user interaction not reflected in the CVSS vector.

Exploitation

The record is not listed in CISA KEV, but EPSS is high at roughly 0.45 (98.7th percentile) and a SecurityFocus reference is tagged Exploit, indicating public exploit material exists. No ransomware association is documented.

What to do

• Upgrade uTorrent to a version later than 1.6 that addresses the overflow; the record does not name the fixed version, so confirm with the vendor.
• Avoid opening torrent files from untrusted or unexpected sources.
• Restrict or block torrent client traffic at the network perimeter where not business-required.
• Run uTorrent with least privilege and consider application sandboxing to limit code execution impact.

Detection

• Monitor for uTorrent process crashes or abnormal child processes spawned by uTorrent.
• Inspect torrent files for oversized or malformed announce headers before they are loaded.
• Alert on network fetches to announce URLs from torrent files that originate from untrusted sources.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.