What is CVE-2021-45861?

CVE-2021-45861 is a medium-severity vulnerability in Tsmuxer Project, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2022-03-02.

How severe is CVE-2021-45861?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Tsmuxer Project

CVE-2021-45861

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

Published 2022-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tsmuxer Project

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

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

Frequently asked questions

What is CVE-2021-45861?: CVE-2021-45861 is a medium-severity vulnerability in Tsmuxer Project, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2022-03-02.
How severe is CVE-2021-45861?: Medium severity. CVSS v3 base score is 5.5 out of 10.