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CVE-1999-0720

21
FAUCET Score

CVE-1999-0720 describes a local privilege escalation vulnerability in the pt_chown command within the Linux kernel. This flaw allows local users to modify TTY terminal devices owned by other users, potentially leading to unauthorized access or disruption. With a CVSS score of 4.6 (Medium), it requires local access and low attack complexity, impacting confidentiality, integrity, and availability. While not on the KEV catalog and lacking active exploitation, an exploit for GNU glibc 2.1/2.1.1 exists on ExploitDB, though there is no recorded community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.20.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.20.1:*:*:*:*:*:*:*

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
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-19467 · Aug 23, 1999
This CVE's current EPSS score of 0.0075 is in the 85th percentile among its peer group of 3,052 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 0.4 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

securityfocus.com / bid/597
securityfocus.com / templates/archive.pike