Detections
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Echo: popt: security update to 1.19+dfsg-2+e1

low Tenable Cloud Security Plugin ID 478663

Description

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

 - A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration
 content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of
 an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful
 exploitation could result in heap metadata corruption, potentially causing the affected process to become
 unavailable (denial of service). (CVE-2026-18743)

Solution

Update the popt library and its related packages to version 1.19+dfsg-2+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-18743

Plugin Details

Severity: Low

ID: 478663

Version: Revision 1.1

Type: Local

Published: 11/9/2026

Updated: 11/9/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Low

Base Score: 1

Temporal Score: 0.7

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

CVSS Score Source: CVE-2026-18743

CVSS v3

Risk Factor: Low

Base Score: 2.5

Temporal Score: 2.2

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/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: 9/2/2026

Vulnerability Publication Date: 9/1/2026

Reference Information

CVE: CVE-2026-18743