CVE-2021-45861

Name: CVE-2021-45861
Creator: NVD / NIST
Published: 2022-03-02T00:15:08.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-45861 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. There is an Assertion `num <= INT_BIT' failed at BitStreamReader::skipBits in /bitStream.h:132 of tsMuxer git-c6a0277.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

There is an Assertion `num <= INT_BIT' failed at BitStreamReader::skipBits in /bitStream.h:132 of tsMuxer git-c6a0277.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.66%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Tsmuxer Project	Tsmuxer	< 2021-10-19

References

https://github.com/justdan96/tsMuxer/issues/478Exploit, Issue Tracking, Third Party Advisory
https://github.com/justdan96/tsMuxer/pull/481Patch, Third Party Advisory
https://github.com/justdan96/tsMuxer/issues/478Exploit, Issue Tracking, Third Party Advisory
https://github.com/justdan96/tsMuxer/pull/481Patch, Third Party Advisory

Timeline

Published: Mar 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45861?

There is an Assertion `num <= INT_BIT' failed at BitStreamReader::skipBits in /bitStream.h:132 of tsMuxer git-c6a0277.

How severe is CVE-2021-45861?

CVE-2021-45861 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45861?

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-2021-45861?

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

Scan your code now

Source: NVD / NIST