CVE-2021-33479

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 ImpacttotalSuccessful exploitation gives total 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

1.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 68.4% 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

2021-11-17 00:00Z4 YR AGO

Last updated

2024-11-18 20:22Z1 YR AGO

Reserved

2021-05-20

Assigning CNA

fedora

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

03357c0c32185e4fd64418338279bfdeb7f6a9ba72d5c33dcbf8a21c54c24e64

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1962861
• sourceforge.nethttps://sourceforge.net/p/jocr/bugs/39/
• security.gentoo.orgGLSA-202401-28https://security.gentoo.org/glsa/202401-28vendor-advisory