How severe is CVE-2023-39804?

CVE-2023-39804 has a CVSS 3.x base score of 6.2, 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 none, and availability high.

Is CVE-2023-39804 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39804?

CVE-2023-39804 affects Gnu Tar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39804?

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

Does CVE-2023-39804 have an EU (EUVD) identifier?

Yes. CVE-2023-39804 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43504.

When was CVE-2023-39804 published?

CVE-2023-39804 was published on 2024-03-27 and last updated on 2026-06-17.

CVE-2023-39804

CVE-2023-39804 is a medium-severity vulnerability in Gnu Tar with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-43504
Affected product: Gnu Tar
Published: 2024-03-27
Last modified: 2026-06-17

Description

In GNU tar before 1.35, mishandled extension attributes in a PAX archive can lead to an application crash in xheader.c.

Frequently asked questions

What is CVE-2023-39804?: In GNU tar before 1.35, mishandled extension attributes in a PAX archive can lead to an application crash in xheader.c.
How severe is CVE-2023-39804?: CVE-2023-39804 has a CVSS 3.x base score of 6.2, 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 none, and availability high.
Is CVE-2023-39804 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39804?: CVE-2023-39804 affects Gnu Tar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39804?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-39804 have an EU (EUVD) identifier?: Yes. CVE-2023-39804 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43504.
When was CVE-2023-39804 published?: CVE-2023-39804 was published on 2024-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*

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