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CVE-2009-3704

28
FAUCET Score

CVE-2009-3704 describes a denial-of-service vulnerability in ZoIPer 2.22 and potentially other versions prior to 2.24. An attacker can crash the application by sending a SIP INVITE request containing an empty Call-Info header. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity and no authentication required, resulting in a partial availability impact. While not listed on the CISA KEV catalog, an exploit is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.22CPE matchmatch criteria
cpe:2.3:a:zoiper:zoiper:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:zoiper:zoiper:2.0:*:*:*:*:*:*:*
2.10CPE matchmatch criteria
cpe:2.3:a:zoiper:zoiper:2.10:*:*:*:*:*:*:*
2.11CPE matchmatch criteria
cpe:2.3:a:zoiper:zoiper:2.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
8.14%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-9987 · Oct 14, 2009
This CVE's current EPSS score of 0.0814 is in the 93rd percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.org / 0910-exploits/zoiper_dos.py.txt
Exploit
secunia.com / advisories/37015
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/53792