Event Monitor in Apple Mac OS X before 10.6.3 does not properly validate hostnames of SSH clients, which allows remote attackers to cause a…

published 2010-03-30 16y ago modified 2026-06-16 4mo ago also EUVD-2010-0531

cvss: 7.8; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

Event Monitor in Apple Mac OS X before 10.6.3 does not properly validate hostnames of SSH clients, which allows remote attackers to cause a denial of service (arbitrary client blacklisting) via a crafted DNS PTR record, related to a "plist injection issue."

Patch / fix

links 2

lists.apple.com/archives/security-announce/2010//Mar/msg00001.html advisory
support.apple.com/kb/HT4077 advisory

Is CVE-2010-0500 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.74% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	7.8	AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness

CWE-20 Improper Input Validation

References

lists.apple.com /archives/security-announce/2010//Mar/msg00001.html
vendor-advisory, patch
support.apple.com /kb/HT4077
patch, vendor-advisory

Sources

CVE List CVE-2010-0500
NVD CVE-2010-0500

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.