Detections
Analytics

Echo: libarchive: security update to 3.7.4-4+e5

medium Tenable Cloud Security Plugin ID 464501

Description

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

 - A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression
 logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A
 remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect
 memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.
 (CVE-2026-4426)

Solution

Update the libarchive library and its related packages to version 3.7.4-4+e5 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-4426

Plugin Details

Severity: Medium

ID: 464501

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.64

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-4426

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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: 3/20/2026

Vulnerability Publication Date: 3/19/2026

Reference Information

CVE: CVE-2026-4426

IAVA: 2026-A-0270