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CVE-2020-36657

25
FAUCET Score

CVE-2020-36657 describes a local privilege escalation vulnerability affecting uptimed before version 0.4.6-r1 on Gentoo. A local user with access to the uptimed account can gain root privileges by exploiting an unsafe chown -R call through the creation of a hard link in the /var/spool/uptimed directory. This vulnerability has a CVSS score of 7.8 (High), indicating a low attack complexity and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.6CPE matchmatch criteria
cpe:2.3:a:uptimed_project:uptimed:*:*:*:*:*:gentoo:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 73rd percentile among its peer group of 16,985 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.gentoo.org / 630810
ExploitPatchThird Party Advisory
security.gentoo.org / glsa/202305-14