How severe is CVE-2007-6437?

CVE-2007-6437 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-6437 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6437?

CVE-2007-6437 primarily affects Balabit Syslog-ng Open Source Edition. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-6437?

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

When was CVE-2007-6437 published?

CVE-2007-6437 was published on 2007-12-19 and last updated on 2026-06-16.

CVE-2007-6437

CVE-2007-6437 is a medium-severity vulnerability in Balabit Syslog-ng Open Source Edition with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Balabit Syslog-ng Open Source Edition
Published: 2007-12-19
Last modified: 2026-06-16

Description

Balabit syslog-ng 2.0.x before 2.0.6 and 2.1.x before 2.1.8 allows remote attackers to cause a denial of service (crash) via a message with a timestamp that does not contain a trailing space, which triggers a NULL pointer dereference.

Frequently asked questions

What is CVE-2007-6437?: Balabit syslog-ng 2.0.x before 2.0.6 and 2.1.x before 2.1.8 allows remote attackers to cause a denial of service (crash) via a message with a timestamp that does not contain a trailing space, which triggers a NULL pointer dereference.
How severe is CVE-2007-6437?: CVE-2007-6437 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-6437 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-6437?: CVE-2007-6437 primarily affects Balabit Syslog-ng Open Source Edition. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-6437?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-6437 published?: CVE-2007-6437 was published on 2007-12-19 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:balabit:syslog-ng_open_source_edition:*:*:*:*:*:*:*:*
cpe:2.3:a:balabit:syslog-ng_premium_edition:*:*:*:*:*:*:*:*

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