CVE-2021-43519

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

1.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 66.9% of scored records. A rank, not a probability.

NVD base score

5.5 (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:U/C:N/I:N/A:H

NVD analysis status

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

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

2021-11-09 12:26Z4 YR AGO

Last updated

2024-08-04 03:55Z2 YR AGO

Reserved

2021-11-08

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-674Uncontrolled RecursionClass
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

227d52d0a76cfafc7b6138533520d97792fe014687f1eef73650227e5187dcca

• lua-users.orghttp://lua-users.org/lists/lua-l/2021-10/msg00123.htmlx_refsource_MISC
• lua-users.orghttp://lua-users.org/lists/lua-l/2021-11/msg00015.htmlx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2022-e6b2bd5b50https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C7XHFYHGSZKL53VCLSJSAJ6VMFGAIXKO/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-473560d1a6https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/vendor-advisoryx_refsource_FEDORA