How severe is CVE-2021-46705?

CVE-2021-46705 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2021-46705 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46705?

CVE-2021-46705 affects Gnu Grub2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46705?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46705 published?

CVE-2021-46705 was published on 2022-03-16 and last updated on 2026-06-17.

CVE-2021-46705

CVE-2021-46705 is a medium-severity vulnerability in Gnu Grub2 with a CVSS 3.x base score of 5.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-377.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
CVSS v2: 2.1
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-377
Affected product: Gnu Grub2
Published: 2022-03-16
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-46705?: 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.
How severe is CVE-2021-46705?: CVE-2021-46705 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2021-46705 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46705?: CVE-2021-46705 affects Gnu Grub2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46705?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46705 published?: CVE-2021-46705 was published on 2022-03-16 and last updated on 2026-06-17.

References

https://bugzilla.suse.com/show_bug.cgi?id=1190474

Affected products (1)

cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

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Other CWE-377 (Insecure Temporary File) vulnerabilities

CVE-2011-4119 — Critical (CVSS 9.8): caml-light <= 0.75 uses mktemp() insecurely, and also does unsafe things in /tmp during make install.
CVE-2012-2666 — Critical (CVSS 9.8): golang/go in 1.0.2 fixes all.bash on shared machines. dotest() in src/pkg/debug/gosym/pclntab_test.go creates a…
CVE-2015-5224 — Critical (CVSS 9.8): The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to cause file name…
CVE-2025-14307 — High (CVSS 8.1): An insecure temporary file creation vulnerability exists in the AutoExtract component of Robocode version 1.9.3.6. The…
CVE-2023-43498 — High (CVSS 8.1): In Jenkins 2.423 and earlier, LTS 2.414.1 and earlier, processing file uploads using MultipartFormDataParser creates…
CVE-2025-46369 — High (CVSS 7.8): Dell Alienware Command Center 6.x (AWCC), versions prior to 6.10.15.0, contains an Insecure Temporary File…

Browse all CWE-377 (Insecure Temporary File) vulnerabilities →