Detections
Analytics

Echo: System.Security.Cryptography.Xml: security update to 8.0.0+echo.1

critical Tenable Cloud Security Plugin ID 464036

Description

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

 - Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a
 security feature over a network. (CVE-2026-47304)

Solution

Update the System.Security.Cryptography.Xml library and its related packages to version 8.0.0+echo.1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-47304

Plugin Details

Severity: Critical

ID: 464036

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.15

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-47304

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: 9/17/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-47304