Is CVE-2026-32882 actively exploited?

No active exploitation of CVE-2026-32882 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-32882 be exploited remotely?

Yes. CVE-2026-32882 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-32882?

CVE-2026-32882 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-32882

CWE-125Published: May 19, 2026· Updated: May 20, 2026

7.1

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.6th

Official Description

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap buffer over-read in HeifPixelImage::overlay() in libheif/pixelimage.cc. When compositing an overlay image (iovl) whose child image has a different bit depth for the alpha channel than for the color channels, the function indexes into the alpha plane using the color channel stride (in_stride) instead of the previously retrieved alpha_stride, causing reads past the end of the alpha buffer (up to 3,123 bytes for a 100×50 image with 10-bit color and 8-bit alpha). A crafted HEIF file can exploit this to cause a denial of service (crash) or potentially disclose adjacent heap memory through leaked bytes embedded in the decoded output pixels. This issue has been fixed in versionThis issue has been fixed in version 1.22.0.

NVD Source

Technical Analysis

CVE-2026-32882 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 availability disruption (denial of service), with a CVSS base score of 7.1.