CVE-2021-45985

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.
• 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

1.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.0% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

Analyzed. 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

2023-04-10 00:00Z3 YR AGO

Last updated

2025-02-12 16:02Z1 YR AGO

Reserved

2022-01-03

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-126Buffer Over-readVariant

Data version

5.1

Document digest

469014276ea137fdc21748668dfe56c8ca2d482d887f515b4d5227f5f9721e9a

• www.lua.orghttps://www.lua.org/bugs.html#5.4.3-11
• github.comhttps://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5
• lua-users.orghttp://lua-users.org/lists/lua-l/2021-12/msg00019.html