CVE-2021-21382

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

1.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-06-11 20:50Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-668Exposure of Resource to Wrong SphereClass
• CWE-862Missing AuthorizationClass

Data version

5.1

Document digest

de59ceab456717e796e25bd3427ec6778dd08ac68c59fa9c13d3f3894c15cdaf

• github.comhttps://github.com/wireapp/restund/security/advisories/GHSA-96j5-w9jq-pv2xx_refsource_CONFIRM
• github.comhttps://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7px_refsource_MISC
• github.comhttps://github.com/wireapp/restund/pull/7x_refsource_MISC
• docs.wire.comhttps://docs.wire.com/understand/restund.htmlx_refsource_MISC
• github.comhttps://github.com/wireapp/ansible-restund/blob/master/templates/restund.conf.j2#L40-L43x_refsource_MISC
• talosintelligence.comhttps://talosintelligence.com/vulnerability_reports/TALOS-2018-0732x_refsource_MISC
• www.rtcsec.comhttps://www.rtcsec.com/post/2021/01/details-about-cve-2020-26262-bypass-of-coturns-default-access-control-protection/#further-concerns-what-elsex_refsource_MISC