How severe is CVE-1999-0247?

CVE-1999-0247 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0247 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0247?

CVE-1999-0247 primarily affects Isc Inn. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0247?

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-1999-0247 published?

CVE-1999-0247 was published on 1997-07-21 and last updated on 2026-06-16.

CVE-1999-0247

CVE-1999-0247 is a high-severity vulnerability in Isc Inn 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: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Isc Inn
Published: 1997-07-21
Last modified: 2026-06-16

Description

Buffer overflow in nnrpd program in INN up to version 1.6 allows remote users to execute arbitrary commands.

Frequently asked questions

What is CVE-1999-0247?: Buffer overflow in nnrpd program in INN up to version 1.6 allows remote users to execute arbitrary commands.
How severe is CVE-1999-0247?: CVE-1999-0247 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0247 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0247?: CVE-1999-0247 primarily affects Isc Inn. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0247?: 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-1999-0247 published?: CVE-1999-0247 was published on 1997-07-21 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:isc:inn:1.4:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.4sec:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.4sec2:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.4unoff3:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.4unoff4:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.5:*:*:*:*:*:*:*
cpe:2.3:a:isc:inn:1.5.1:*:*:*:*:*:*:*

More vulnerabilities in Isc Inn

CVE-2002-0525 — Critical (CVSS 10.0): Format string vulnerabilities in (1) inews or (2) rnews for INN 2.2.3 and earlier allow local users and remote…
CVE-1999-0754 — Critical (CVSS 10.0): The INN inndstart program allows local users to gain privileges by specifying an alternate configuration file using the…
CVE-1999-0100 — Critical (CVSS 10.0): Remote access in AIX innd 1.5.1, using control messages.
CVE-1999-0043 — Critical (CVSS 9.8): Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and "rmgroup" control messages, and…
CVE-2004-0045 — High (CVSS 7.5): Buffer overflow in the ARTpost function in art.c in the control message handling code for INN 2.4.0 may allow remote…
CVE-1999-0706 — High (CVSS 7.5): Linux xmonisdn package allows local users to gain root privileges by modifying the IFS or PATH environmental variables.

All CVEs affecting Isc Inn →