How severe is CVE-2013-4391?

CVE-2013-4391 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2013-4391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4391?

CVE-2013-4391 primarily affects Systemd Project Systemd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4391?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-4391 published?

CVE-2013-4391 was published on 2013-10-28 and last updated on 2026-06-16.

CVE-2013-4391

CVE-2013-4391 is a high-severity vulnerability in Systemd Project Systemd with a CVSS 2.0 base score of 7.5. 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-190.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Systemd Project Systemd
Published: 2013-10-28
Last modified: 2026-06-16

Description

Integer overflow in the valid_user_field function in journal/journald-native.c in systemd allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large journal data field, which triggers a heap-based buffer overflow.

Frequently asked questions

What is CVE-2013-4391?: Integer overflow in the valid_user_field function in journal/journald-native.c in systemd allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large journal data field, which triggers a heap-based buffer overflow.
How severe is CVE-2013-4391?: CVE-2013-4391 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-4391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4391?: CVE-2013-4391 primarily affects Systemd Project Systemd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4391?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-4391 published?: CVE-2013-4391 was published on 2013-10-28 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

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