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CVE-2019-17347

24
FAUCET Score

CVE-2019-17347 is a denial-of-service or privilege escalation vulnerability affecting Xen through version 4.11.x, specifically impacting x86 PV guest operating systems like Debian. The vulnerability allows a malicious guest to manipulate its virtualized %cr4 register, leading to instability or unauthorized access. With a CVSS score of 7.8 (High), it presents a significant risk due to its low attack complexity and potential for complete confidentiality, integrity, and availability compromise. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.1.0, <= 4.11.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 66th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2019-17347Important

xen: x86: PV kernel context switch corruption leading to Dos or privileges escalation

Oct 31, 2019

References

seclists.org / bugtraq/2020/Jan/21
Mailing ListThird Party Advisory
debian.org / security/2020/dsa-4602
Third Party Advisory
xenbits.xen.org / xsa/advisory-293.html
Vendor Advisory
openwall.com / lists/oss-security/2019/10/25/8
Mailing List
xenbits.xen.org / xsa/advisory-293.html
PatchVendor Advisory