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CVE-2016-9776

19
FAUCET Score

CVE-2016-9776 describes an infinite loop vulnerability in QEMU's ColdFire Fast Ethernet Controller emulator, affecting Debian and QEMU products. A privileged guest user can trigger this flaw by sending specific packets, causing a denial-of-service on the host system. With a CVSS score of 5.5 (Medium), it requires local access and has low attack complexity, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.8.0:rc1:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.8.0:rc2:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 89th percentile among its peer group of 15,937 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2016-9776Low

Qemu: net: mcf_fec: infinite loop while receiving data in mcf_fec_receive

Nov 29, 2016

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00007.html
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-11/msg05324.html
PatchVendor Advisory
security.gentoo.org / glsa/201701-49
Third Party Advisory
openwall.com / lists/oss-security/2016/12/02/3
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/12/02/8
Mailing ListThird Party Advisory
securityfocus.com / bid/94638
Third Party AdvisoryVDB Entry