How severe is CVE-2006-4925?

CVE-2006-4925 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-4925 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4925?

CVE-2006-4925 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4925?

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

When was CVE-2006-4925 published?

CVE-2006-4925 was published on 2006-09-29 and last updated on 2026-06-16.

CVE-2006-4925

CVE-2006-4925 is a medium-severity vulnerability in Openbsd Openssh with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd Openssh
Published: 2006-09-29
Last modified: 2026-06-16

Description

packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.

Frequently asked questions

What is CVE-2006-4925?: packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
How severe is CVE-2006-4925?: CVE-2006-4925 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-4925 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4925?: CVE-2006-4925 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4925?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4925 published?: CVE-2006-4925 was published on 2006-09-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:openbsd:openssh:4.5:*:*:*:*:*:*:*

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