What is CVE-2009-1759?

CVE-2009-1759 is a vulnerability in Rahul Ctorrent, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-05-22.

Is CVE-2009-1759 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Rahul Ctorrent

CVE-2009-1759

Stack-based buffer overflow in the btFiles::BuildFromMI function (trunk/btfiles.cpp) in Enhanced CTorrent (aka dTorrent) 3.3.2 and probably earlier, and CTorrent 1.3.4, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a Torrent file containing a long path.

Vulnerability class: Buffer Overflow

Published 2009-05-22 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.137 (96.4th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.137 · newest: 0.137 · change: 0.000

Affected products

Rahul Ctorrent — versions 1.3.4
Rahul Dtorrent — versions 3.2.0, 3.3.0, 3.3.1

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

www.redhat.com/archives/fedora-package-announce/2009-August/msg01102.html (vendor-advisory)
bugzilla.redhat.com/show_bug.cgi
www.vupen.com/english/advisories/2009/1092 (vdb-entry, Vendor Advisory)
dtorrent.svn.sourceforge.net/viewvc/dtorrent/dtorrent/trunk/btfiles.cpp (Patch)
www.exploit-db.com/exploits/8470 (exploit)
exchange.xforce.ibmcloud.com/vulnerabilities/49959 (vdb-entry)
secunia.com/advisories/34752 (Vendor Advisory, third-party-advisory)
www.openwall.com/lists/oss-security/2009/05/20/3 (mailing-list, Patch)
www.securityfocus.com/bid/34584 (Exploit, Patch, vdb-entry)
www.debian.org/security/2009/dsa-1817 (vendor-advisory)

Frequently asked questions

What is CVE-2009-1759?: CVE-2009-1759 is a vulnerability in Rahul Ctorrent, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-05-22.
Is CVE-2009-1759 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.