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CVE-2001-0858

18
FAUCET Score

CVE-2001-0858 describes a buffer overflow vulnerability within the pppattach utility and other linked PPP tools in Caldera Open Unix 8.0 and UnixWare versions 7.1.0 and 7.1.1. This flaw allows a local attacker to gain elevated privileges on affected systems. Rated as MEDIUM severity with a CVSS score of 4.6, it requires local access (AV:L) and has low attack complexity (AC:L), potentially leading to compromise of confidentiality, integrity, and availability (C:P/I:P/A:P). There is no evidence of active exploitation, publicly available exploit code, or inclusion in CISA's KEV catalog, though it has garnered a notable amount of community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
7.1.0CPE matchmatch criteria
cpe:2.3:a:caldera:unixware:7.1.0:*:*:*:*:*:*:*
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

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
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 48th percentile among its peer group of 3,049 CVEs.

Social Chatter

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

stage.caldera.com / pub/security/openunix/CSSA-2001-SCO.32
PatchVendor Advisory
marc.info
iss.net / security_center/static/7570.php