CVE-2020-15852

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 26.9% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-07-20 18:54Z6 YR AGO

Last updated

2024-08-04 13:30Z2 YR AGO

Reserved

2020-07-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-276Incorrect Default PermissionsBase
• CWE-270Privilege Context Switching ErrorBase

Data version

5.1

Document digest

9592acf43052cc2809587270692a29db0bcf70ebad583cfd63c1a9fc5ce179ad

• xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-329.htmlx_refsource_MISC
• github.comhttps://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2x_refsource_MISC
• git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2x_refsource_MISC
• www.openwall.com[oss-security] 20200721 Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issueshttp://www.openwall.com/lists/oss-security/2020/07/21/2mailing-listx_refsource_MLIST
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20200810-0001/x_refsource_CONFIRM