CVE-2026-3950

LOW 3.3

strukturag libheif stsz/stts track.cc load out-of-bounds

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-125 CWE-119
Vendor	strukturag
Product	libheif
Published	Mar 11, 2026
Last Updated	Mar 11, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

strukturag / libheif

1.21.0 1.21.1 1.21.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 Niebelungen (VulDB User)