CVE-2021-47498

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 11.3% 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:L/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

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

2024-05-22 08:19Z2 YR AGO

Last updated

2026-05-11 13:55Z3 MO AGO

Reserved

2024-05-22

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

83127b3285924e303c5a5e1831c6cf3369a52e58d25ce46c4a7d4a8d7be6165c

• git.kernel.orghttps://git.kernel.org/stable/c/8050652810bf38241edec8717393d2446e8036f1
• git.kernel.orghttps://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351
• git.kernel.orghttps://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html