CVE-2021-33499

Name: CVE-2021-33499
Creator: NVD / NIST
Published: 2022-01-15T17:15:10.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2021-33499 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Pexip Infinity before 26 allows remote denial of service because of missing H.264 input validation (issue 2 of 2).. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

Pexip Infinity before 26 allows remote denial of service because of missing H.264 input validation (issue 2 of 2).

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.24%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Pexip	Infinity	< 26

References

https://docs.pexip.com/admin/security_bulletins.htmVendor Advisory
https://docs.pexip.com/admin/security_bulletins.htmVendor Advisory

Timeline

Published: Jan 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33499?

Pexip Infinity before 26 allows remote denial of service because of missing H.264 input validation (issue 2 of 2).

How severe is CVE-2021-33499?

CVE-2021-33499 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33499?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33499?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST