LOW
CVE-2014-3640
CWE-476Published: November 7, 2014· Updated: Jun 17, 2026
2.1
CVSS v3.1
Official Description
The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.
Technical Analysis
CVE-2014-3640 requires local access, meaning attackers must already have a foothold on the target system.
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 VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:L/AC:L/Au:N/C:N/I:N/A:P
Affected Vendors & Products
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.
Official Patches & Advisories
All References (18)
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.htmlPatch · Vendor Advisory
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.htmlPatch · Vendor Advisory
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.htmlPatch · Vendor Advisory
→
http://rhn.redhat.com/errata/RHSA-2015-0349.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2015-0624.htmlThird Party Advisory
→
http://www.debian.org/security/2014/dsa-3045Third Party Advisory
→
http://www.ubuntu.com/usn/USN-2409-1Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1144818Issue Tracking
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.htmlPatch · Vendor Advisory
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.htmlPatch · Vendor Advisory
→
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.htmlPatch · Vendor Advisory
→
http://rhn.redhat.com/errata/RHSA-2015-0349.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2015-0624.htmlThird Party Advisory
Quick Facts
CVE IDCVE-2014-3640
CVSS Score2.1 / 10
SeverityLOW
WeaknessCWE-476
CISA KEVNo
Affected4 vendor(s)
PublishedNov 7, 2014
Related CVEs (CWE-476)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2014-3640 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.