How severe is CVE-2004-1391?

CVE-2004-1391 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2004-1391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1391?

CVE-2004-1391 primarily affects Qnx Rtos. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-1391?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-1391 published?

CVE-2004-1391 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-1391

CVE-2004-1391 is a medium-severity vulnerability in Qnx Rtos with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qnx Rtos
Published: 2004-12-31
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2004-1391?: CVE-2004-1391 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2004-1391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1391?: CVE-2004-1391 primarily affects Qnx Rtos. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-1391?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-1391 published?: CVE-2004-1391 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:qnx:rtos:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtos:6.1.0a:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtos:6.2.0:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtos:6.2.1a:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtos:6.2.1b:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtos:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:qnx:rtp:6.1:*:*:*:*:*:*:*

More vulnerabilities in Qnx Rtos

CVE-2004-1390 — Critical (CVSS 10.0): Multiple buffer overflows in the PPPoE daemon (PPPoEd) in QNX RTP 6.1 allow remote attackers to execute arbitrary code…
CVE-2006-0623 — High (CVSS 7.2): QNX Neutrino RTOS 6.3.0 ships /etc/rc.d/rc.local with world-writable permissions, which allows local users to modify…
CVE-2006-0621 — High (CVSS 7.2): Multiple buffer overflows in QNX Neutrino RTOS 6.2.0 allow local users to execute arbitrary code via a long first…
CVE-2005-1528 — High (CVSS 7.2): Untrusted search path vulnerability in the crttrap command in QNX Neutrino RTOS 6.2.1 allows local users to load…
CVE-2002-2042 — High (CVSS 7.2): ptrace in the QNX realtime operating system (RTOS) 4.25 and 6.1.0 allows programs to attach to privileged processes,…
CVE-2002-2040 — High (CVSS 7.2): The (1) phrafx and (2) phgrafx-startup programs in QNX realtime operating system (RTOS) 4.25 and 6.1.0 do not properly…

All CVEs affecting Qnx Rtos →