What is CVE-2018-18883?

CVE-2018-18883 is a high-severity vulnerability in Xen, classified under NULL Pointer Dereference. CVSS score: 8.8/10. Published 2018-11-01.

How severe is CVE-2018-18883?

High severity. CVSS v3 base score is 8.8 out of 10.

NULL pointer dereference in Xen

CVE-2018-18883

An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.

EPSS: 0.004 (35.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Xen
N/a — versions n/a

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

cve@mitre.org (Patch, x_refsource_MISC, Mitigation, Vendor Advisory)
cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-18883?: CVE-2018-18883 is a high-severity vulnerability in Xen, classified under NULL Pointer Dereference. CVSS score: 8.8/10. Published 2018-11-01.
How severe is CVE-2018-18883?: High severity. CVSS v3 base score is 8.8 out of 10.