CVE-2021-22890

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/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

Low. 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

2021-04-01 17:46Z5 YR AGO

Last updated

2025-06-09 15:11Z1 YR AGO

Reserved

2021-01-06

Assigning CNA

hackerone

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-300Channel Accessible by Non-EndpointClass
• CWE-290Authentication Bypass by SpoofingBase

Data version

5.1

Document digest

af1aae23459a5a0222160b056eddcdd44d1a4f167ce8fa4087f4269d271bec68

• hackerone.comhttps://hackerone.com/reports/1129529x_refsource_MISC
• curl.sehttps://curl.se/docs/CVE-2021-22890.htmlx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-cab5c9befbhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-065371f385https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-26a293c72bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202105-36https://security.gentoo.org/glsa/202105-36vendor-advisoryx_refsource_GENTOO
• www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210521-0007/x_refsource_CONFIRM
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfx_refsource_CONFIRM