CVE-2020-36657
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to...
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
CVE-2020-36657- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
CVE List
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
CVE-2020-36657- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
EUVDEUVD-2020-24103
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
EUVD-2020-24103- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h9jm-ppr9-845g
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to...
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
GHSA-h9jm-ppr9-845g- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
CVE-2020-36657- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-36657
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
- Record
UBUNTU-CVE-2020-36657- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
uptimedUbuntu:16.04:LTS |
All versions, plus listed versions 1:0.3.17-4 |
None known |
uptimedUbuntu:18.04:LTS |
All versions, plus listed versions 1:0.4.0+git20150923.6b22106-1.11:0.4.0+git20150923.6b22106-2 |
None known |
uptimedUbuntu:20.04:LTS |
All versions, plus listed versions 1:0.4.1-11:0.4.2-1 |
None known |
uptimedUbuntu:22.04:LTS |
All versions, plus listed versions 1:0.4.3-11:0.4.5-11:0.4.6-11:0.4.6-21:0.4.6-3 |
None known |
uptimedUbuntu:24.04:LTS |
All versions, plus listed versions 1:0.4.6-3 |
None known |
uptimedUbuntu:25.10 |
All versions, plus listed versions 1:0.4.6-3.1 |
None known |
uptimedUbuntu:26.10 |
All versions, plus listed versions 1:0.4.6-3.1build1 |
None known |
uptimedUbuntu:26.04:LTS |
All versions, plus listed versions 1:0.4.6-3.11:0.4.6-3.1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-36657 is a high vulnerability (CVSS 7.8) in Uptimed Project Uptimed, published January 25, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 36th percentile. No source names a fixed version.