A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
strukturag libheif affected
Version Status Constraints
1.21.0 affected —
1.21.1 affected —
1.21.2 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob cve-icon cve-icon
https://github.com/strukturag/libheif/ cve-icon cve-icon
https://github.com/strukturag/libheif/issues/1715 cve-icon cve-icon
https://github.com/strukturag/libheif/pull/1721 cve-icon cve-icon
https://vuldb.com/?ctiid.350382 cve-icon cve-icon
https://vuldb.com/?id.350382 cve-icon cve-icon
https://vuldb.com/?submit.766431 cve-icon cve-icon
History

Wed, 11 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 11 Mar 2026 19:30:00 +0000

Type Values Removed Values Added
Description A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.
Title strukturag libheif stsz/stts track.cc load out-of-bounds
Weaknesses CWE-119
CWE-125
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS: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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-11T20:24:59.822Z

Reserved: 2026-03-11T12:02:54.833Z

Link: CVE-2026-3950

cve-icon Vulnrichment

Updated: 2026-03-11T20:24:48.393Z

cve-icon NVD

Status : Received

Published: 2026-03-11T20:16:22.567

Modified: 2026-03-11T20:16:22.567

Link: CVE-2026-3950

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses