CVE-2026-63893

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

0.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 31.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-07-27.

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

2026-07-19 14:55Z1 MO AGO

Last updated

2026-08-05 12:36Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

021d637dc50dfb19fff5e6e8d13c2bc87e5a186f068c0704e9ed5187b03417eb

• git.kernel.orghttps://git.kernel.org/stable/c/6a63623621639acbb39bc2d9fb09559681716695
• git.kernel.orghttps://git.kernel.org/stable/c/e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36
• git.kernel.orghttps://git.kernel.org/stable/c/9fee50c4e1e42f6d3cbe30df584f9f648f626071
• git.kernel.orghttps://git.kernel.org/stable/c/8d4a758b407ab3de3be86d1ceadfa35d717d30c7
• git.kernel.orghttps://git.kernel.org/stable/c/5c06a3043ad944f087bb2ae0aae28d820bb9f460
• git.kernel.orghttps://git.kernel.org/stable/c/31b98e503ecca8077e5247253dd5425ab84bc96d
• git.kernel.orghttps://git.kernel.org/stable/c/a47784aee77f33f786dc5d7375db821bdae68792
• git.kernel.orghttps://git.kernel.org/stable/c/01deda0152066c6c955f0619114ea6afa070aaec