CVE-2021-22945

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

6.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 93.7% of scored records. A rank, not a probability.

NVD base score

9.1 (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:H/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

2021-09-23 00:00Z5 YR AGO

Last updated

2026-10-14 11:19Z15 DAYS AGO

Reserved

2021-01-06

Assigning CNA

hackerone

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-415Double FreeVariant

Data version

5.2

Document digest

4cb893ae4b2f57d710d89be1186cf220624bbc1bf386233c9e34e20f7f9952ae

• hackerone.comhttps://hackerone.com/reports/1269242
• lists.fedoraproject.orgFEDORA-2021-fc96a3a749https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/vendor-advisory
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.html
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211029-0003/
• lists.fedoraproject.orgFEDORA-2021-1d24845e93https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/vendor-advisory
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• support.apple.comhttps://support.apple.com/kb/HT213183
• seclists.org20220314 APPLE-SA-2022-03-14-4 macOS Monterey 12.3http://seclists.org/fulldisclosure/2022/Mar/29mailing-list
• www.debian.orgDSA-5197https://www.debian.org/security/2022/dsa-5197vendor-advisory
• security.gentoo.orgGLSA-202212-01https://security.gentoo.org/glsa/202212-01vendor-advisory
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-389290.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html