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CVE-1999-0303

14
FAUCET Score

CVE-1999-0303 describes a buffer overflow vulnerability in the BNU UUCP daemon (uucpd) that can be triggered by excessively long hostnames, affecting Digital, NetBSD, OpenBSD, and Sun systems. With a CVSS score of 4.6 (MEDIUM), this local vulnerability allows an unauthenticated attacker to achieve partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, and it has garnered no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.1CPE matchmatch criteria
cpe:2.3:o:digital:osf_1:1.1:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.3:*:*:*:*:*:*:*
1.3.1CPE matchmatch criteria
cpe:2.3:o:netbsd:netbsd:1.3.1:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 41st percentile among its peer group of 3,049 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-1999-0303