How severe is CVE-1999-0017?

CVE-1999-0017 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0017 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0017?

CVE-1999-0017 primarily affects Gnu Inet. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0017?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0017 published?

CVE-1999-0017 was published on 1997-12-10 and last updated on 2026-06-16.

CVE-1999-0017

CVE-1999-0017 is a high-severity vulnerability in Gnu Inet with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnu Inet
Published: 1997-12-10
Last modified: 2026-06-16

Description

FTP servers can allow an attacker to connect to arbitrary ports on machines other than the FTP client, aka FTP bounce.

Frequently asked questions

What is CVE-1999-0017?: FTP servers can allow an attacker to connect to arbitrary ports on machines other than the FTP client, aka FTP bounce.
How severe is CVE-1999-0017?: CVE-1999-0017 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0017 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0017?: CVE-1999-0017 primarily affects Gnu Inet. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0017?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0017 published?: CVE-1999-0017 was published on 1997-12-10 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0017

Affected products (32)

cpe:2.3:a:gnu:inet:5.01:*:*:*:*:*:*:*
cpe:2.3:a:gnu:inet:6.01:*:*:*:*:*:*:*
cpe:2.3:a:gnu:inet:6.02:*:*:*:*:*:*:*
cpe:2.3:a:washington_university:wu-ftpd:2.4:*:*:*:*:*:*:*
cpe:2.3:o:caldera:openlinux:1.2:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:1.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:1.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:1.2:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:2.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:2.1.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:2.1.7:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:3.2:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4.2:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4.3:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.0:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.1:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.2:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.2.1:*:*:*:*:*:*:*
cpe:2.3:o:sco:open_desktop:3.0:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.4:*:*:*:*:*:*:*
cpe:2.3:o:sco:unixware:2.1:*:*:*:*:*:*:*
cpe:2.3:o:siemens:reliant_unix:*:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.1.3u1:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.1.4:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.3:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.4:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.4:*:x86:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5:*:x86:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5.1:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5.1:*:x86:*:*:*:*:*

More vulnerabilities in Gnu Inet

CVE-1999-0035 — Medium (CVSS 5.4): Race condition in signal handling routine in ftpd, allowing read/write arbitrary files.
CVE-1999-0016 — Medium (CVSS 5.0): Land IP denial of service.
CVE-1999-0216 — Medium (CVSS 5.0): Denial of service of inetd on Linux through SYN and RST packets.

All CVEs affecting Gnu Inet →