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CVE-2016-9577

23
FAUCET Score

CVE-2016-9577 describes a heap overflow vulnerability in SPICE versions prior to 0.13.90, affecting products like Debian and Red Hat. An authenticated attacker could exploit this by sending specially crafted messages to the SPICE server, leading to a denial of service or potentially remote code execution. This vulnerability carries a high CVSS score of 8.8 due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.13.90CPE matchmatch criteria
cpe:2.3:a:spice_project:spice:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.84%
Probability of exploitation in next 30 days
EPSS Percentile
89.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0384 is in the 88th percentile among its peer group of 17,822 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: spice-server-0:0.12.4-13.el6_8.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: spice-0:0.12.4-20.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: imgbased-0:0.8.16-0.1.el7ev
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: redhat-release-virtualization-host-0:4.0-7.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: redhat-virtualization-host-0:4.0-20170307.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: rhevm-appliance-0:20170307.0-1
View patch
redhatno patchvia redhat_api
Product: Red Hat Virtualization 4Fixed in: distribution

Vendor Advisories (1)

redhatCVE-2016-9577Moderate

spice: Buffer overflow in main_channel_alloc_msg_rcv_buf when reading large messages

Feb 6, 2017

References

rhn.redhat.com / errata/RHSA-2017-0253.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0549.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:0254
Third Party Advisory
access.redhat.com / errata/RHSA-2017:0552
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
debian.org / security/2017/dsa-3790
Third Party Advisory
securityfocus.com / bid/96040
Third Party AdvisoryVDB Entry