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CVE-2017-15597

31
FAUCET Score

CVE-2017-15597 is a critical memory corruption vulnerability affecting Xen through version 4.9.x, stemming from incorrect assumptions in grant copying code. A malicious guest administrator can exploit this flaw to cause hypervisor memory corruption, leading to a host crash and Denial of Service, with potential for privilege escalation and information leaks. With a CVSS score of 9.1 (CRITICAL), this vulnerability is remotely exploitable with low attack complexity, requiring high privileges. While there are no known public exploits or Metasploit/Nuclei modules, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.9.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:rc7:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.81%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0281 is in the 85th percentile among its peer group of 464 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen

Vendor Advisories (1)

redhatCVE-2017-15597Moderate

xen: pin count / page reference race in grant table code (XSA-236)

Oct 24, 2017

References

lists.debian.org / debian-lts-announce/2018/10/msg00009.html
support.citrix.com / article/CTX229057
Issue TrackingThird Party Advisory
debian.org / security/2017/dsa-4050
openwall.com / lists/oss-security/2017/10/24/3
Issue TrackingMailing ListMitigationThird Party Advisory
securityfocus.com / bid/101564
Issue TrackingThird Party AdvisoryVDB Entry
securitytracker.com / id/1039653
Issue TrackingThird Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-236.html
Issue TrackingPatchVendor Advisory