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CVE-2021-35346

30
FAUCET Score

CVE-2021-35346 is a critical heap-based buffer overflow vulnerability affecting tsMuxer v2.6.16, specifically within the HevcSpsUnit::short_term_ref_pic_set(int) function in hevc.cpp. With a CVSS score of 9.8, this vulnerability allows for unauthenticated, low-complexity network attacks that can lead to complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its critical severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.16CPE matchmatch criteria
cpe:2.3:a:tsmuxer_project:tsmuxer:2.6.16:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.74%
Probability of exploitation in next 30 days
EPSS Percentile
75.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0174 is in the 63rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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/436
ExploitThird Party Advisory
github.com / justdan96/tsMuxer/pull/422/files
PatchThird Party Advisory