Detections
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Echo: libheif: security update to 1.23.2-1

medium Tenable Cloud Security Plugin ID 472819

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, the public
 heif_region_item_add_region_inline_mask_data() function in libheif/api/libheif/heif_regions.cc accepts
 mask_data_len without verifying that it equals the byte count required by width and height. A later
 heif_region_get_mask_image() call derives the read length from the region geometry, so an undersized
 stored buffer causes heif_region_get_inline_mask_image() to read beyond the heap allocation and copy
 adjacent bytes into the returned monochrome mask image. This can disclose heap data or crash an
 application that constructs region metadata through the writer API, while the file-parsing path is not
 affected because it validates the canonical mask size. This issue is fixed in version 1.23.2.
 (CVE-2026-84448)

Solution

Update the libheif library and its related packages to version 1.23.2-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-84448

Plugin Details

Severity: Medium

ID: 472819

Version: Revision 1.1

Type: Local

Published: 10/5/2026

Updated: 10/5/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 8.06

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

CVSS Score Source: CVE-2026-84448

CVSS v3

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.5

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/19/2026

Vulnerability Publication Date: 9/18/2026

Reference Information

CVE: CVE-2026-84448

IAVB: 2026-B-0281