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CVE-1999-0043

55
FAUCET Score

CVE-1999-0043 describes a critical command injection vulnerability in the INN daemon (innd) version 1.5, affecting various Linux distributions including Red Hat, Caldera, and Netscape. This flaw allows unauthenticated attackers to execute arbitrary commands remotely by injecting shell metacharacters into "newgroup" and "rmgroup" control messages. With a CVSS score of 9.8 (CRITICAL), successful exploitation grants full confidentiality, integrity, and availability impact due to the low attack complexity and network-based vector. While not listed in CISA's KEV catalog, the vulnerability has garnered significant community discussion, though no public exploit code or active exploitation has been identified.

Impacted Technologies

VendorProductVersion(s)CPE
1.4secCPE matchmatch criteria
cpe:2.3:a:isc:inn:1.4sec:*:*:*:*:*:*:*
1.4sec2CPE matchmatch criteria
cpe:2.3:a:isc:inn:1.4sec2:*:*:*:*:*:*:*
1.4unoff3CPE matchmatch criteria
cpe:2.3:a:isc:inn:1.4unoff3:*:*:*:*:*:*:*
1.4unoff4CPE matchmatch criteria
cpe:2.3:a:isc:inn:1.4unoff4:*:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:isc:inn:1.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
44.84%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.4484 is in the 96th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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