CVE-2020-8867

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

2.58% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 83.8% 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

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

2020-04-22 20:51Z6 YR AGO

Last updated

2024-08-04 10:12Z2 YR AGO

Reserved

2020-02-11

Assigning CNA

zdi

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
• CWE-613Insufficient Session ExpirationBase

Data version

5.1

Document digest

e4dcce775f861aa58442e7aaa6bedc82a1692787e0ce878c2ceef5e5986562b1

• www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-20-536/x_refsource_MISC
• opcfoundation.orghttps://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdfx_refsource_MISC