How severe is CVE-2021-46021?

CVE-2021-46021 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-46021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46021?

CVE-2021-46021 primarily affects Gnu Recutils. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46021?

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

When was CVE-2021-46021 published?

CVE-2021-46021 was published on 2022-01-14 and last updated on 2026-06-17.

CVE-2021-46021

CVE-2021-46021 is a medium-severity vulnerability in Gnu Recutils with a CVSS 3.x base score of 5.5. 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-416.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Gnu Recutils
Published: 2022-01-14
Last modified: 2026-06-17

Description

An Use-After-Free vulnerability in rec_record_destroy() at rec-record.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.

Frequently asked questions

What is CVE-2021-46021?: An Use-After-Free vulnerability in rec_record_destroy() at rec-record.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.
How severe is CVE-2021-46021?: CVE-2021-46021 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-46021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46021?: CVE-2021-46021 primarily affects Gnu Recutils. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46021 published?: CVE-2021-46021 was published on 2022-01-14 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:gnu:recutils:1.8.90:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

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