What is CVE-2020-29040?

CVE-2020-29040 is a high-severity vulnerability in Xen, classified under Off-by-one Error. CVSS score: 8.8/10. Published 2020-11-24.

How severe is CVE-2020-29040?

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

Buffer overflow in Xen

CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

EPSS: 0.004 (29.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/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)

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-29040?: CVE-2020-29040 is a high-severity vulnerability in Xen, classified under Off-by-one Error. CVSS score: 8.8/10. Published 2020-11-24.
How severe is CVE-2020-29040?: High severity. CVSS v3 base score is 8.8 out of 10.