4.7

CVE-2016-4963: xen Improper Access Control

Modified
AliasesUBUNTU-CVE-2016-4963DEBIAN-CVE-2016-4963
Published 07-06-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-4963 is a medium (CVSS 4.7) Improper Access Control vulnerability in xen. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 22.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.7/10
010
Medium · v3.0 (NVD)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 3
DLA-1493-1MGASA-2017-0012SUSE-SU-2016:2093-1SUSE-SU-2016:2100-1SUSE-SU-2016:2533-1

Timeline

  1. 07-06-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The libxl device-handling in Xen through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.30% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • xen< 4.8.0~rc3-1
Ubuntu1 product
  • xen< 4.4.2-0ubuntu0.14.04.6 | < 4.6.0-1ubuntu4.1
Xen1 product
  • xen4.0.0 | 4.0.1 | 4.0.2 | 4.0.3 | 4.0.4 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.4 | 4.1.5 | 4.1.6 | 4.1.6.1 | 4.2.0 | 4.2.1 | 4.2.2 | 4.2.3 | 4.2.4 | 4.2.5 | 4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.4.0 | 4.4.0:rc1 | 4.4.1 | 4.4.2 | 4.4.3 | 4.4.4 | 4.5.0 | 4.5.1 | 4.5.2 | 4.5.3 | 4.6.0 | 4.6.1

3 vendors · 3 products

References

6 links