CVE-2021-23159

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

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 40.9% 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

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

2022-08-25 19:35Z4 YR AGO

Last updated

2024-08-03 18:58Z2 YR AGO

Reserved

2021-06-04

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

85844bc260adb946a0dfbf5e544dfbfee1d66397c5c5c4db54a0598c57ff9e6a

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1975671x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-23159x_refsource_MISC
• sourceforge.nethttps://sourceforge.net/p/sox/bugs/352/x_refsource_MISC
• security.archlinux.orghttps://security.archlinux.org/CVE-2021-23159x_refsource_MISC