CVE-2021-33158

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

Equal to or higher than the score of 11.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. 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

2024-05-16 20:47Z2 YR AGO

Last updated

2024-08-03 23:42Z2 YR AGO

Reserved

2021-05-18

Assigning CNA

intel

Record state

PUBLISHED

Severity

High (CVSS 7.2)

CNA CVSS vector

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

Weaknesses

• CWE-86Improper Neutralization of Invalid Characters in Identifiers in Web PagesVariant

Data version

5.1

Document digest

8ecf561496843f1978ea1bbe0c0e2387f7d8a46a0b7124088e69c456254b459a

• www.intel.comhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00756.html