CVE-2021-36222

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

10.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 95.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-14.

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

2021-07-22 17:28Z5 YR AGO

Last updated

2026-10-14 11:49Z15 DAYS AGO

Reserved

2021-07-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

089fe0502a568e664ca348559ae458609d64931567a7356a1455ec8817b4f2bb

• web.mit.eduhttps://web.mit.edu/kerberos/advisories/x_refsource_MISC
• github.comhttps://github.com/krb5/krb5/releasesx_refsource_MISC
• www.debian.orgDSA-4944https://www.debian.org/security/2021/dsa-4944vendor-advisoryx_refsource_DEBIAN
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
• github.comhttps://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562x_refsource_CONFIRM
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211022-0003/x_refsource_CONFIRM
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211104-0007/x_refsource_CONFIRM
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html