How severe is CVE-2008-0852?

CVE-2008-0852 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-0852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-0852?

CVE-2008-0852 affects Freesshd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-0852?

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

When was CVE-2008-0852 published?

CVE-2008-0852 was published on 2008-02-21 and last updated on 2026-06-16.

CVE-2008-0852

CVE-2008-0852 is a medium-severity vulnerability in Freesshd 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.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freesshd
Published: 2008-02-21
Last modified: 2026-06-16

Description

freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference.

Frequently asked questions

What is CVE-2008-0852?: freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference.
How severe is CVE-2008-0852?: CVE-2008-0852 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2008-0852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-0852?: CVE-2008-0852 affects Freesshd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-0852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-0852 published?: CVE-2008-0852 was published on 2008-02-21 and last updated on 2026-06-16.

References

Affected products (1)

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

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