Vulnerability in Qnx Rtos

CVE-2004-1391

Untrusted execution path vulnerability in the PPPoE daemon (PPPoEd) in QNX RTP 6.1 allows local users to execute arbitrary programs by modifying the PATH environment variable to point to a malicious mount program.

Published 2004-12-31 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 4.6 (Medium). Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.006 (44.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Qnx Rtos — versions 6.1.0, 6.1.0a, 6.2.0
Qnx Rtp — versions 6.1

References

www.rfdslabs.com.br/qnx-advs-01-2004.txt
www.securityfocus.com/bid/11105 (Exploit, vdb-entry)
www.osvdb.org/9661 (vdb-entry)
exchange.xforce.ibmcloud.com/vulnerabilities/17284 (vdb-entry)
archives.neohapsis.com/archives/fulldisclosure/2004-09/0155.html (mailing-list, Exploit)
www.kb.cert.org/vuls/id/577566 (US Government Resource, Third Party Advisory, third-party-advisory)