CVE-2020-24240

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

1.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 67.6% 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

2020-08-25 13:45Z6 YR AGO

Last updated

2024-08-04 15:12Z2 YR AGO

Reserved

2020-08-13

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

fb6de7b824021aa53c062c03c2ca14dd5343293bd110a4a3b52875ffaa6f4943

• github.comhttps://github.com/akimd/bison/commit/be95a4fe2951374676efc9454ffee8638faaf68dx_refsource_MISC
• lists.gnu.orghttps://lists.gnu.org/r/bug-bison/2020-07/msg00051.htmlx_refsource_MISC
• github.comhttps://github.com/akimd/bison/compare/v3.7...v3.7.1x_refsource_MISC