Detections
Analytics

Echo: libpng1.6: security update to 1.6.56-1+e1

medium Tenable Cloud Security Plugin ID 457310

Description

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

 - A flaw has been found in pnggroup libpng up to 1.6.55. Affected by this vulnerability is the function
 do_pnm2png of the file contrib/pngminus/pnm2png.c of the component pnm2png. This manipulation of the
 argument width/height causes heap-based buffer overflow. The attack is restricted to local execution. The
 exploit has been published and may be used. The project was informed of the problem early through an issue
 report but has not responded yet. (CVE-2026-3713)

Solution

Update the libpng1.6 library and its related packages to version 1.6.56-1+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-3713

Plugin Details

Severity: Medium

ID: 457310

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.56

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2026-3713

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: Medium

Base Score: 4.8

Threat Score: 1.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/9/2026

Vulnerability Publication Date: 3/8/2026

Reference Information

CVE: CVE-2026-3713