HOMEVULNERABILITIESCVE-2017-2620
MEDIUM

CVE-2017-2620

CWE-787Published: July 27, 2018· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.

NVD Source

Technical Analysis

CVE-2017-2620 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Affected Vendors & Products

citrix1 product(s)
xenserver
Debian1 product(s)
debian linux
qemu1 product(s)
qemu
Red Hat6 product(s)
openstackenterprise linux desktopenterprise linux serverenterprise linux server ausenterprise linux server eusenterprise linux workstation
xen1 product(s)
xen
Source: NVD CPE · 26 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (46)

Quick Facts

CVE IDCVE-2017-2620
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
Affected5 vendor(s)
PublishedJul 27, 2018

Related CVEs (CWE-787)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2017-2620 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.