Detections
Analytics

Alpine: heif-thumbnailer, multiple libheif packages: security update to 1.21.2-r0

high Tenable Cloud Security Plugin ID 437516

Description

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

 - libheif is an HEIF and AVIF file format decoder and encoder. Prior to version 1.21.0, a crafted HEIF that
 exercises the overlay image item path triggers a heap buffer over-read in `HeifPixelImage::overlay()`. The
 function computes a negative row length (likely from an unclipped overlay rectangle or invalid offsets),
 which then underflows when converted to `size_t` and is passed to `memcpy`, causing a very large read past
 the end of the source plane and a crash. Version 1.21.0 contains a patch. As a workaround, avoid decoding
 images using `iovl` overlay boxes. (CVE-2025-68431)

See Also

https://security.alpinelinux.org/vuln/CVE-2025-68431

Plugin Details

Severity: High

ID: 437516

Version: Revision 1.6

Type: Local

Published: 2/4/2026

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.87

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2025-68431

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 12/29/2025

Reference Information

CVE: CVE-2025-68431

IAVB: 2026-B-0010