Detections
Analytics

Echo: System.Text.Encodings.Web: security update to 1.0.4

high Tenable Cloud Security Plugin ID 458323

Description

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

 - Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass
 Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka
 ".NET Security Feature Bypass Vulnerability." (CVE-2017-0248)

Solution

Update the System.Text.Encodings.Web library and its related packages to version 1.0.4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2017-0248

Plugin Details

Severity: High

ID: 458323

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2017-0248

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 5/9/2017

Reference Information

CVE: CVE-2017-0248