Low 3.3Published Mar 11, 2026

CVE-2026-3949strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds

Updated under an hour ago (Oct 26, 2026, 3:20 PM ET)

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Every CVE for strukturag libheif

Exploited in the last 30 days

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.

CVSS: 3.3 LOW (v3.1, CNA)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
Weakness (CWE): CWE-125, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Mar 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

strukturag libheif strukturag:libheif (from the name)	1.21.0; 1.21.1; 1.21.2	CNA record

References

References

https://vuldb.com/?id.350381	vdb-entry, technical-description
https://vuldb.com/?ctiid.350381	signature, permissions-required
https://vuldb.com/?submit.765979	third-party-advisory
https://github.com/strukturag/libheif/issues/1712	issue-tracking
https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531	issue-tracking
https://github.com/biniamf/pocs/tree/main/libheif_vvdec	exploit
https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03	patch
https://github.com/strukturag/libheif/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.