Threat Intelligence / CVE / CVE-2026-62292

CVE-2026-62292 — strukturag libheif

CVSS v4.0 8.7 (High, derived from score) · EPSS 0.5% (higher than 43.0% of all scored CVEs) · Priority 8.1/10 · Published 2026-08-18

As of 2026-08-18, CVE-2026-62292 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in strukturag libheif, CVSS v4.0 8.7, EPSS 0.5% (43.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-62292 as of 2026-08-18; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

Last updated: 2026-08-18

What is CVE-2026-62292?

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.1, a crafted uncompressed HEIF image using generic zlib unci full-item compression can crash an application that decodes an advertised tile with heif_image_handle_decode_image_tile(). In libheif/codecs/uncompressed/unc_decoder.cc, unc_decoder::fetch_tile_data() computes a large tile offset and unc_decoder::get_compressed_image_data_uncompressed() validates it with range_start_offset plus range_size. For the last advertised tile (4095, 4095), the addition can wrap to zero, bypass the bounds check, and pass an invalid source pointer and a one-terabyte length to memcpy. The observed result is an out-of-bounds read and process crash; opening the file alone does not trigger the issue because tile decoding is required. This issue is fixed in version 1.23.1.

The record classifies CVE-2026-62292 under weakness class CWE-125. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 31 days ago.

Severity and exploitation probability

CVSS v4.0 base score: 8.7 — High (derived from score)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS (FIRST): 0.5% probability of exploitation in the next 30 days, higher than 43.0% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 8.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-08-18

Is CVE-2026-62292 being exploited?

Weaponised exploit code for CVE-2026-62292 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 49 in the Threadlinqs vulnerability feed.

trickest/cve (trickest)

Affected products and versions

strukturag: libheif

How to fix CVE-2026-62292

No vendor patch reference has been recorded for CVE-2026-62292 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-62292

No threat campaign in the Threadlinqs corpus currently references CVE-2026-62292, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, NVD, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-08-19. This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

github.com

Other references

Full detection coverage & IOCs for threats exploiting CVE-2026-62292 are available via the Threadlinqs MCP server (Purple tier). View plans →

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