CVE-2026-7740Public exploit

Local process crash via malformed VVC timing

Published May 4, 2026 · Updated May 4, 2026

Denial of service in justdan96 tsMuxer 2.0 through 2.7.0 allows local users to crash the process with a crafted VVC input file. While processing the file, VvcVpsUnit::setFPS reaches vvc.cpp's num_units_in_tick_bit_pos assertion with a nonpositive value and aborts. A local user must cause tsMuxer to process the file; the demonstrated consequence is a single-process crash, with no reported data disclosure or modification.

CVSS severity3.3
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in justdan96 tsMuxer 2.0 through 2.7.0 allows local users to crash the process with a crafted VVC input file. While processing the file, VvcVpsUnit::setFPS reaches vvc.cpp's num_units_in_tick_bit_pos assertion with a nonpositive value and aborts. A local user must cause tsMuxer to process the file; the demonstrated consequence is a single-process crash, with no reported data disclosure or modification.

The record

CVE
CVE-2026-7740
Published
May 4, 2026
Updated
May 4, 2026
Vendor
justdan96
Product
tsMuxer
Classifications
CWE-404, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0
  2. Affected versionversion=2.1
  3. Affected versionversion=2.2
  4. Affected versionversion=2.3
  5. Affected versionversion=2.4
  6. Affected versionversion=2.5
  7. Affected versionversion=2.6
  8. Affected versionversion=2.7.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

justdan96 · tsMuxerversion=2.0; version=2.1; version=2.2; version=2.3; version=2.4; version=2.5; version=2.6; version=2.7.0

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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