How severe is CVE-1999-0043?

CVE-1999-0043 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-1999-0043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 45% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0043?

CVE-1999-0043 primarily affects Isc Inn. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0043?

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

When was CVE-1999-0043 published?

CVE-1999-0043 was published on 1996-12-04 and last updated on 2026-06-16.

CVE-1999-0043

CVE-1999-0043 is a critical-severity vulnerability in Isc Inn with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 45% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 45% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Isc Inn
Published: 1996-12-04
Last modified: 2026-06-16

Description

Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and "rmgroup" control messages, and others.

Frequently asked questions

What is CVE-1999-0043?: Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and "rmgroup" control messages, and others.
How severe is CVE-1999-0043?: CVE-1999-0043 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-1999-0043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 45% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0043?: CVE-1999-0043 primarily affects Isc Inn. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-0043 published?: CVE-1999-0043 was published on 1996-12-04 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0043

Affected products (14)

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:netscape:news_server:1.1:*:*:*:*:*:*:*
cpe:2.3:o:bsdi:bsd_os:2.1:*:*:*:*:*:*:*
cpe:2.3:o:caldera:openlinux:1.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:4.1:*:*:*:*:*:*:*
cpe:2.3:h:nec:goah_intrasv:1.1:*:*:*:*:*:*:*
cpe:2.3:h:nec:goah_networksv:1.2:*:*:*:*:*:*:*
cpe:2.3:h:nec:goah_networksv:2.2:*:*:*:*:*:*:*
cpe:2.3:h:nec:goah_networksv:3.1:*:*:*:*:*:*:*

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-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.
CVE-1999-0705 — High (CVSS 7.5): Buffer overflow in INN inews program.

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