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CVE-2002-0987

27
FAUCET Score

CVE-2002-0987 describes a privilege escalation vulnerability in the X server (Xsco) of Caldera OpenUNIX 8.0.0 and UnixWare 7.1.1. The flaw allows local users to gain elevated privileges because the X server fails to drop privileges before executing external programs like xkbcomp via popen. This vulnerability carries a CVSS score of 7.2, indicating high severity with low attack complexity and full impact on confidentiality, integrity, and availability. While not listed on the KEV catalog, an exploit (EDB-21758) is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

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
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-21758 · Aug 27, 2002
This CVE's current EPSS score of 0.0071 is in the 70th 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

ftp.sco.com / pub/updates/OpenUNIX/CSSA-2002-SCO.38
iss.net / security_center/static/9976.php
osvdb.org / 5044
securityfocus.com / bid/5575