CVE-2021-44964

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

0.98% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 59.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. 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

2022-03-14 14:24Z4 YR AGO

Last updated

2024-08-04 04:32Z2 YR AGO

Reserved

2021-12-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

5c7dfa2e7651df1a80ea211e7a01834ad4666e1d1c5f9e8e76935754470f27ae

• lua-users.orghttp://lua-users.org/lists/lua-l/2021-11/msg00186.htmlx_refsource_MISC
• lua-users.orghttp://lua-users.org/lists/lua-l/2021-12/msg00007.htmlx_refsource_MISC
• lua-users.orghttp://lua-users.org/lists/lua-l/2021-12/msg00015.htmlx_refsource_MISC
• lua-users.orghttp://lua-users.org/lists/lua-l/2021-12/msg00030.htmlx_refsource_MISC
• github.comhttps://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerabilityx_refsource_MISC