How severe is CVE-2008-6899?

CVE-2008-6899 has a CVSS 2.0 base score of 9.0, rated critical severity.

Is CVE-2008-6899 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-2008-6899?

CVE-2008-6899 affects Freesshd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-6899?

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

When was CVE-2008-6899 published?

CVE-2008-6899 was published on 2009-08-05 and last updated on 2026-06-16.

CVE-2008-6899

CVE-2008-6899 is a critical-severity vulnerability in Freesshd with a CVSS 2.0 base score of 9.0. 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-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.0)
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Freesshd
Published: 2009-08-05
Last modified: 2026-06-16

Description

Multiple buffer overflows in freeSSHd 1.2.1 allow remote authenticated users to cause a denial of service (crash) and execute arbitrary code via a long (1) open, (2) unlink, (3) mkdir, (4) rmdir, or (5) stat SFTP command.

Frequently asked questions

What is CVE-2008-6899?: Multiple buffer overflows in freeSSHd 1.2.1 allow remote authenticated users to cause a denial of service (crash) and execute arbitrary code via a long (1) open, (2) unlink, (3) mkdir, (4) rmdir, or (5) stat SFTP command.
How severe is CVE-2008-6899?: CVE-2008-6899 has a CVSS 2.0 base score of 9.0, rated critical severity.
Is CVE-2008-6899 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-2008-6899?: CVE-2008-6899 affects Freesshd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-6899?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-6899 published?: CVE-2008-6899 was published on 2009-08-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:freesshd:freesshd:1.2.1:*:*:*:*:*:*:*

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