CVE-2021-31826

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

2.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 80.5% 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 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-04-27 03:33Z5 YR AGO

Last updated

2024-08-03 23:10Z2 YR AGO

Reserved

2021-04-27

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

5.1

Document digest

f8e5abf777d9499983ea7aaf221cb3c3c478173f1bcfabd4ebf5f6fd21e05b08

• shibboleth.nethttps://shibboleth.net/community/advisories/secadv_20210426.txtx_refsource_MISC
• issues.shibboleth.nethttps://issues.shibboleth.net/jira/browse/SSPCPP-927x_refsource_MISC
• git.shibboleth.nethttps://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ecx_refsource_MISC
• bugs.debian.orghttps://bugs.debian.org/987608x_refsource_MISC
• www.debian.orgDSA-4905https://www.debian.org/security/2021/dsa-4905vendor-advisoryx_refsource_DEBIAN