CVE-2021-45863

FAUCET Score

CVE-2021-45863 describes a heap-based buffer overflow vulnerability in tsMuxer git-2678966, specifically within the HevcUnit::updateBits function in hevc.cpp. This medium-severity vulnerability (CVSS 5.5) can be triggered locally through user interaction, potentially leading to a denial of service. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 2021-12-21CPE matchmatch criteria	cpe:2.3:a:tsmuxer_project:tsmuxer::::::::

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.73%

Probability of exploitation in next 30 days

EPSS Percentile

50.5%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0073 is in the 57th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / justdan96/tsMuxer/issues/509

ExploitIssue TrackingPatchThird Party Advisory

github.com / justdan96/tsMuxer/pull/512

PatchThird Party Advisory