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CVE-2021-40571

24
FAUCET Score

CVE-2021-40571 is a double-free vulnerability in the MP4Box component of Gpac 1.0.1, specifically within the ilst_box_read function. This flaw allows an attacker to trigger a denial of service, and potentially achieve arbitrary code execution or privilege escalation. With a CVSS score of 7.8 (High), exploitation requires local access and user interaction, but could lead to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 62nd percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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 / gpac/gpac/commit/a69b567b8c95c72f9560c873c5ab348be058f340
PatchThird Party Advisory
github.com / gpac/gpac/issues/1895
ExploitIssue TrackingThird Party Advisory
debian.org / security/2023/dsa-5411