CVE-2007-0021

CVE-2007-0021 is a high-severity vulnerability in Apple Ichat with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.

Frequently asked questions

What is CVE-2007-0021?
Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.
How severe is CVE-2007-0021?
CVE-2007-0021 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-0021 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0021?
CVE-2007-0021 affects Apple Ichat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-0021?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-0021 published?
CVE-2007-0021 was published on 2007-01-23 and last updated on 2026-06-16.

References

Affected products (1)

More vulnerabilities in Apple Ichat

All CVEs affecting Apple Ichat →