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CVE-2002-0517

18
FAUCET Score

CVE-2002-0517 describes a buffer overflow vulnerability in the X11 library (libX11) affecting Caldera Open UNIX 8.0.0 and UnixWare 7.1.1. This flaw allows local users to achieve root privileges by supplying a crafted, long -xrm argument to X11-based applications like dtterm or xterm. With a CVSS score of 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C), this vulnerability is considered highly severe due to its low attack complexity and complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.1.1CPE matchmatch criteria
cpe:2.3:a:caldera:unixware:7.1.1:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:caldera:openunix:8.0:*:*:*:*:*:*:*

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
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 56th 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

stage.caldera.com / pub/security/openunix/CSSA-2002-SCO.15/CSSA-2002-SCO.15.txt
archives.neohapsis.com / archives/bugtraq/2002-01/0099.html
iss.net / security_center/static/7282.php
PatchVendor Advisory
iss.net / security_center/static/8828.php
kb.cert.org / vuls/id/169059
US Government Resource
securityfocus.com / archive/1/249106
Vendor Advisory
securityfocus.com / bid/4502
PatchVendor Advisory