CVE-2021-28963

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

1.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 68.6% of scored records. A rank, not a probability.

NVD base score

5.3 (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:L/A:N

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

2021-03-22 07:02Z5 YR AGO

Last updated

2024-08-03 21:55Z2 YR AGO

Reserved

2021-03-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class

Data version

5.1

Document digest

0b2de03ff1c4240cfc429118a7037c250655eb6749ea4b2f04b6adc19c951846

• bugs.debian.orghttps://bugs.debian.org/985405x_refsource_MISC
• shibboleth.nethttps://shibboleth.net/community/advisories/secadv_20210317.txtx_refsource_MISC
• issues.shibboleth.nethttps://issues.shibboleth.net/jira/browse/SSPCPP-922x_refsource_MISC
• git.shibboleth.nethttps://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=d1dbebfadc1bdb824fea63843c4c38fa69e54379x_refsource_MISC
• www.debian.orghttps://www.debian.org/security/2021/dsa-4872x_refsource_MISC