HOMEVULNERABILITIESCVE-2007-4429
MEDIUM

CVE-2007-4429

NVD-CWE-noinfoPublished: August 20, 2007· Updated: Jun 16, 2026

5.0
CVSS v3.1

Official Description

Unspecified vulnerability in Skype allows remote attackers to cause a denial of service (server hang) via unknown vectors related to sending long URIs, as claimed to be actively exploited on 20070817 using a "call to a specific number." NOTE: this identifier is for the en.securitylab.ru disclosure. According to the vendor, this issue is separate from the "sign-on issues" that reduced Skype service on 20070817, which appears to be a site-specific problem. As of 20070821, it is not clear whether this issue is simply a symptom of the larger sign-on problem.

NVD Source

Technical Analysis

CVE-2007-4429 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected Vendors & Products

skype_technologies1 product(s)
skype
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (22)

→
http://blogs.csoonline.com/the_skype_mystery_why_blame_the_august_windows_updates
→
http://en.securitylab.ru/poc/301420.phpExploit
→
http://en.securitylab.ru/poc/extra/301419.php
→
http://heartbeat.skype.com/2007/08/what_happened_on_august_16.html
→
http://heartbeat.skype.com/2007/08/where_we_are_at_1100_gmt.html
→
http://securityreason.com/securityalert/3032
→
http://www.securityfocus.com/archive/1/476942/100/0/threaded
→
http://www.securityfocus.com/archive/1/477156/100/0/threaded
→
http://www.securityfocus.com/archive/1/477178/100/0/threaded
→
http://www.securityfocus.com/archive/1/477240/100/0/threaded
→
http://www.securitylab.ru/news/301422.php
→
http://blogs.csoonline.com/the_skype_mystery_why_blame_the_august_windows_updates
→
http://en.securitylab.ru/poc/301420.phpExploit
→
http://en.securitylab.ru/poc/extra/301419.php
→
http://heartbeat.skype.com/2007/08/what_happened_on_august_16.html

Quick Facts

CVE IDCVE-2007-4429
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedAug 20, 2007

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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2007-4429 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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