CVE-2021-46705
grub2-once uses fixed file name in /var/tmp
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
grub2-once uses fixed file name in /var/tmp
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
- Record
CVE-2021-46705- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-377
- Updated
- 2026-11-02
EUVDEUVD-2021-33363
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
- Record
EUVD-2021-33363- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p6fp-whjx-7g5m
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15...
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
- Record
GHSA-p6fp-whjx-7g5m- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-377
- Updated
- 2026-11-02
NVD
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
- Record
CVE-2021-46705- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-377
- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11926-1 No score
grub2-2.06-18.1 on GA media
These are all security issues fixed in the grub2-2.06-18.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11926-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
grub2openSUSE:Tumbleweed |
before 2.06-18.1 | 2.06-18.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-46705 is a medium vulnerability (CVSS 5.1) in Gnu Grub2, published March 16, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th percentile. Fixed in grub2 2.06-18.1.