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Echo: libpng1.6: security update to 1.6.48-1+e2

medium Tenable Cloud Security Plugin ID 463863

Description

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

 - LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable
 Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read
 vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the
 simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha,
 RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter
 code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue
 has been patched in version 1.6.51. (CVE-2025-64506)

Solution

Update the libpng1.6 library and its related packages to version 1.6.48-1+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-64506

Plugin Details

Severity: Medium

ID: 463863

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 52.04

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-2025-64506

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/22/2025

Vulnerability Publication Date: 11/11/2025

Reference Information

CVE: CVE-2025-64506