SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2007-5907

Xen 3.1.1 does not prevent modification of the CR4 TSC from applications, which allows pv guests to cause a denial of service (crash).

MEDIUM 4.7EPSS 0.35%

Does this matter?

Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own.

Description

Xen 3.1.1 does not prevent modification of the CR4 TSC from applications, which allows pv guests to cause a denial of service (crash).

CVSS 2.0
4.7 MEDIUMAV:L/AC:M/Au:N/C:N/I:N/A:C
EPSS
0.35% probability · 29th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-264
Affected
xensource inc/xen
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 0.35%26 October 202626 October 2026

EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.