Is CVE-2026-41071 actively exploited?

No active exploitation of CVE-2026-41071 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-41071 be exploited remotely?

Yes. CVE-2026-41071 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-41071?

CVE-2026-41071 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-41071

HIGH

CVE-2026-41071

CWE-125Published: May 22, 2026· Updated: May 27, 2026

8.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.8th

Official Description

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a crafted HEIF sequence file where the saiz box declares more samples than actually exist in the track's chunk table causes a heap-buffer-overflow (out-of-bounds read) in the SampleAuxInfoReader constructor. The SampleAuxInfoReader constructor iterates over saiz->get_num_samples() samples but doesn't validate that this count is consistent with the number of chunks in the chunks vector. When saiz declares more samples than the chunks cover, the loop increments current_chunk past chunks.size(), causing an out-of-bounds read on the chunks vector. The vulnerability is triggered during file parsing (heif_context_read_from_file) without any additional user interaction. Any application using libheif to open untrusted HEIF files is affected. This issue has been fixed in version 1.22.0.

NVD Source

Technical Analysis

CVE-2026-41071 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 8.1.