CVE-2017-2620

What it is

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.

At a glance

Exploitability

Can be exploited from the same network segment with a low-privilege account. Limited direct impact.

Exploit odds

3.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-07-27 19:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:16 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.6% in the next 30 days (EPSS).
• Severity: 5.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-07-27 19:29 UTC

Last modified

2026-06-17 01:16 UTC

Exploit probability

3.6% · EPSS, next 30 days

Weakness

CWE-787 · Out-of-bounds write

Record status

Modified

Affected

• Qemu < 2.8.0
• Citrix Xenserver 6.0.2
• Citrix Xenserver 6.2.0
• Citrix Xenserver 6.5
• Citrix Xenserver 7.0
• Citrix Xenserver 7.1
• Redhat Openstack 5.0
• Redhat Openstack 6.0

Attack profile CVSS 3.0 · 5.5

Attack vector

Adjacent network

Complexity

High

Privileges needed

Low

User interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-2620.md and follow it. Check whether this project is affected by CVE-2017-2620. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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