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CVE-2017-8284

24
FAUCET Score

CVE-2017-8284 describes a privilege escalation vulnerability in QEMU versions prior to 2.9.0, specifically within the disas_insn function when using TCG mode without hardware acceleration. An attacker could exploit this by crafting a modified basic block to inject code into a setuid program, potentially gaining elevated privileges. While rated as High severity (CVSS 7.0) due to its potential for complete compromise (C, I, A: H), the attack complexity is high (AC:H) and requires local access (AV:L, PR:L). There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.8.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.0HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 76th percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-8284Low

QEMU: privilege escalation via disas_insn function in TCG mode

Oct 2, 2019

References

bugs.chromium.org / p/project-zero/issues/detail
Issue TrackingThird Party Advisory
github.com / qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
Issue TrackingPatchThird Party Advisory