CVE-2018-20450

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

1.06% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 64.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.0/AV:N/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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2018-12-25 17:00Z7 YR AGO

Last updated

2024-08-05 11:58Z2 YR AGO

Reserved

2018-12-25

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-415Double FreeVariant

Data version

5.1

Document digest

64424bb37f2b2b3c1ff16357e8b0b36b15ed3053d508c7543cbe667f88253fdc

• github.comhttps://github.com/evanmiller/libxls/issues/34x_refsource_MISC
• security.gentoo.orgGLSA-202003-64https://security.gentoo.org/glsa/202003-64vendor-advisoryx_refsource_GENTOO