CVE-2009-2818: n/a vulnerability

CVE-2009-2818: Adaptive Firewall in Apple Mac OS X before 10.6.2 does not properly handle invalid usernames in SSH login a...

Adaptive Firewall in Apple Mac OS X before 10.6.2 does not properly handle invalid usernames in SSH login attempts, which makes it easier for remote attackers to obtain login access via a brute-force attack (aka dictionary attack).

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 06:07 UTC (UTC+00:00)

Security readout for executives and security teams

This issue weakens Mac OS X’s Adaptive Firewall protection against SSH password guessing. On Mac OS X versions before 10.6.2, invalid SSH usernames were not handled correctly, making dictionary attacks easier for remote attackers if SSH was reachable. Exposure is most plausible on legacy Mac OS X systems earlier than 10.6.2 with SSH accessible from untrusted networks and relying on Adaptive Firewall behavior. Prioritize remediation for any legacy Mac OS X host with SSH exposed. For retired, isolated, or non-SSH systems, urgency is lower but inventory confirmation is still important. Mitigation focus: Upgrade affected Mac OS X systems to 10.6.2 or later.; Apply Apple security guidance from APPLE-SA-2009-11-09-1 or HT3937.; Restrict SSH access to trusted networks or VPN paths..

Prepared: Jun 28, 2026, 18:15 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 10, 2009, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

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