MEDIUM
CVE-2016-9776
CWE-835Published: December 29, 2016· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
QEMU (aka Quick Emulator) built with the ColdFire Fast Ethernet Controller emulator support is vulnerable to an infinite loop issue. It could occur while receiving packets in 'mcf_fec_receive'. A privileged user/process inside guest could use this issue to crash the QEMU process on the host leading to DoS.
Technical Analysis
CVE-2016-9776 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 (14)
→
http://www.openwall.com/lists/oss-security/2016/12/02/3Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/12/02/8Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/94638Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=1400829Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg05324.htmlPatch · Vendor Advisory
→
https://security.gentoo.org/glsa/201701-49Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/12/02/3Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/12/02/8Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/94638Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=1400829Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg05324.htmlPatch · Vendor Advisory
→
https://security.gentoo.org/glsa/201701-49Third Party Advisory
Quick Facts
CVE IDCVE-2016-9776
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-835
CISA KEVNo
Affected2 vendor(s)
PublishedDec 29, 2016
Related CVEs (CWE-835)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2016-9776 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.