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Fencer Vulns
high 7.5

CVE-2007-0021 in the critical feed json

Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and applica…

published 2007-01-23 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-0025

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
23.7%
EPSS 23.7% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. First public exploit (EDB-3166)
  2. Published

Exploit prediction

23.69% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-3166 Apple iChat 3.1.6 441 - 'aim://' URL Handler Format String (PoC) dos, 2007-01-21
  • projects.info-pull.com http://projects.info-pull.com/moab/MOAB-20-01-2007.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.