CVE-2020-21722

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

0.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 53.3% 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

2023-08-22 00:00Z3 YR AGO

Last updated

2024-10-07 14:26Z2 YR AGO

Reserved

2020-08-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

f090b8f5ad244a1a73e0b695ba93343b5dcf864af72cad3c7ea4419996e6f28b

• sourceforge.nethttps://sourceforge.net/p/oggvideotools/bugs/11/
• github.comhttps://github.com/xiaoxiongwang/security/tree/master/oggvideotools#segv-and-heap-use-after-free-detected-in-line-17-of-streamextractorcpp
• lists.fedoraproject.orgFEDORA-2023-154d731f46https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LO6NXK73PNR4KAAHLXAGPWJAPP772IOD/vendor-advisory
• lists.fedoraproject.orgFEDORA-2023-cf30e790cehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5E3JKOO7D6Y2SW2TQB5JDVG7I4Y3UFGW/vendor-advisory