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Description

A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.

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

biniam (VulDB User) reporter

References

vuldb.com/?id.350381 (VDB-350381 | strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds) vdb-entry technical-description

vuldb.com/?ctiid.350381 (VDB-350381 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.765979 (Submit #765979 | strukturag libheif 1.21.2 Out-of-Bounds Read) third-party-advisory

github.com/strukturag/libheif/issues/1712 issue-tracking

github.com/strukturag/libheif/issues/1712 issue-tracking

github.com/biniamf/pocs/tree/main/libheif_vvdec exploit

github.com/...ommit/b97c8b5f198b27f375127cd597a35f2113544d03 patch

github.com/strukturag/libheif/ product

cve.org (CVE-2026-3949)

nvd.nist.gov (CVE-2026-3949)

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