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CVE-1999-0900

18
FAUCET Score

CVE-1999-0900 describes a buffer overflow vulnerability in the rpc.yppasswdd daemon, specifically affecting linux-nis implementations. This flaw allows a local attacker to gain elevated privileges by manipulating MD5 hash generation. With a CVSS score of 7.2 (HIGH), this vulnerability presents a significant risk, as it can be exploited locally with low complexity to achieve complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no known exploit code available in Metasploit, Nuclei, or ExploitDB, and it has garnered no community discussion or media coverage, indicating a lack of active exploitation or public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:linux-nis:rpc.yppasswdd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 43rd percentile among its peer group of 3,237 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 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-1999-0900