CVE-2007-6276

Mac OS X 10.5 - Denial of Service via Crafted Load Balancing Packet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2007-6276. PoCs published by mu-b.

AI-analyzed exploit summary This exploit sends a malformed UDP packet to the vpnd service on Apple MACOS X 10.5.0 (Leopard), triggering an arithmetic exception in the accept_connections function, resulting in a remote denial-of-service (DoS). The payload is a crafted binary buffer designed to exploit a vulnerability in the service.

Description

The accept_connections function in the virtual private network daemon (vpnd) in Apple Mac OS X 10.5 before 10.5.4 allows remote attackers to cause a denial of service (divide-by-zero error and daemon crash) via a crafted load balancing packet to UDP port 4112.

Exploits (1)

exploitdb WORKING POC VERIFIED
by mu-b · cdososx
https://www.exploit-db.com/exploits/4690

This exploit sends a malformed UDP packet to the vpnd service on Apple MACOS X 10.5.0 (Leopard), triggering an arithmetic exception in the accept_connections function, resulting in a remote denial-of-service (DoS). The payload is a crafted binary buffer designed to exploit a vulnerability in the service.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Apple MACOS X 10.5.0 (Leopard) vpnd
No auth needed
Prerequisites: Network access to the target system · vpnd service running on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (10)

Core 10
Core References
Vendor Advisory x_refsource_confirm
http://support.apple.com/kb/HT2163
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2008/1981/references
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/38855
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/26699
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/4145
Mailing List vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2008//Jun/msg00002.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/27938
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/30802
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1019052
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/4690

Scores

EPSS 0.0915
EPSS Percentile 94.7%

Details

CWE
CWE-189
Status published
Products (8)
apple/mac_os_x 10.5
apple/mac_os_x 10.5.1
apple/mac_os_x 10.5.2
apple/mac_os_x 10.5.3
apple/mac_os_x_server 10.5
apple/mac_os_x_server 10.5.1
apple/mac_os_x_server 10.5.2
apple/mac_os_x_server 10.5.3
Published Dec 07, 2007
Tracked Since Feb 18, 2026