Skip to content
Fencer Vulns
critical 10.0

CVE-2009-1236 json

Heap-based buffer overflow in the AppleTalk networking stack in XNU 1228.3.13 and earlier on Apple Mac OS X 10.5.6 and earlier allows remot…

published 2009-04-02 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1235

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.4%
EPSS 8.4% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

Heap-based buffer overflow in the AppleTalk networking stack in XNU 1228.3.13 and earlier on Apple Mac OS X 10.5.6 and earlier allows remote attackers to cause a denial of service (system crash) via a ZIP NOTIFY (aka ZIPOP_NOTIFY) packet that overwrites a certain ifPort structure member.

Timeline

  1. First public exploit (EDB-8262)
  2. Published

Exploit prediction

8.41% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-8262 Apple Mac OSX xnu 1228.3.13 - 'zip-notify' Remote Kernel Overflow (PoC) dos, 2009-03-23
  • securityfocus.com http://www.securityfocus.com/bid/34201 referenced PoC, tagged "exploit" by a source, unverified
  • digit-labs.org http://www.digit-labs.org/files/exploits/xnu-appletalk-zip.c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.