CVE-2021-31515

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

2.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 82.4% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/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

2021-06-29 14:33Z5 YR AGO

Last updated

2024-08-03 23:03Z2 YR AGO

Reserved

2021-04-16

Assigning CNA

zdi

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

a5ddf9828f7e8456d57559dd2f85bc482544aa5352763a4e01cc682de16ac9e9

• www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-21-678/x_refsource_MISC
• binary.ninjahttps://binary.ninja/2021/06/03/2.4-release.html#security-advisoriesx_refsource_MISC