What’s Vulnerable › Vulnerabilities

CVE-2009-3704

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2009-10-16 · updated 2026-06-16

Description

ZoIPer 2.22, and possibly other versions before 2.24 Library 5324, allows remote attackers to cause a denial of service (crash) via a SIP INVITE request with an empty Call-Info header.

Affected products

• Zoiper: through 2.22; 2.0, 2.10, 2.11

References

• http://packetstormsecurity.org/0910-exploits/zoiper_dos.py.txt
• http://secunia.com/advisories/37015
• https://exchange.xforce.ibmcloud.com/vulnerabilities/53792
• http://packetstormsecurity.org/0910-exploits/zoiper_dos.py.txt
• http://secunia.com/advisories/37015
• https://exchange.xforce.ibmcloud.com/vulnerabilities/53792

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