Home

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.

PUBLISHED Reserved 2026-03-11 | Published 2026-03-11 | Updated 2026-03-11 | Assigner VulDB




MEDIUM: 4.8CVSS: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
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C

Problem types

Out-of-Bounds Read

Memory Corruption

Product status

1.21.0
affected

1.21.1
affected

1.21.2
affected

Timeline

2026-03-11:Advisory disclosed
2026-03-11:VulDB entry created
2026-03-11:VulDB entry last update

Credits

Niebelungen (VulDB User) reporter

References

vuldb.com/?id.350382 (VDB-350382 | strukturag libheif stsz/stts track.cc load out-of-bounds) vdb-entry technical-description

vuldb.com/?ctiid.350382 (VDB-350382 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.766431 (Submit #766431 | strukturag libheif 1.21.2 Out-of-Bounds Read) third-party-advisory

github.com/strukturag/libheif/issues/1715 issue-tracking

github.com/...pocs/tree/main/heif_dec_sequence_chunk_idx_oob exploit

github.com/strukturag/libheif/pull/1721 issue-tracking patch

github.com/strukturag/libheif/ product

cve.org (CVE-2026-3950)

nvd.nist.gov (CVE-2026-3950)

Download JSON