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CVE-1999-0099

28
FAUCET Score

CVE-1999-0099 describes a critical buffer overflow vulnerability in the syslog utility, impacting various systems including BSDi, Convex, Cray, IBM, and Sun. With a CVSS score of 10.0, this flaw allows unauthenticated attackers to remotely execute arbitrary code and gain root privileges with low attack complexity. Despite its high severity and potential for complete compromise, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:2.0:*:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:2.0.1:*:*:*:*:*:*:*
10.1CPE matchmatch criteria
cpe:2.3:o:convex:convexos:10.1:*:*:*:*:*:*:*
10.2CPE matchmatch criteria
cpe:2.3:o:convex:convexos:10.2:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:convex:convexos:11.0:*:*:*:*:*:*:*

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
3.19%
Probability of exploitation in next 30 days
EPSS Percentile
86.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0319 is in the 76th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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-1999-0099