Detections
Analytics

Echo: libpcap: security update to 1.10.5-2+e2

medium Tenable Cloud Security Plugin ID 461157

Description

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

 - The rpcap client code that processes a RPCAP_MSG_PACKET message received from the server incorrectly
 validates its headers. A malicious server can send a crafted message and cause the client to treat up to
 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the captured
 packet. (CVE-2026-18238)

Solution

Update the libpcap library and its related packages to version 1.10.5-2+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-18238

Plugin Details

Severity: Medium

ID: 461157

Version: Revision 1.2

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: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-18238

CVSS v3

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/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: 9/6/2026

Vulnerability Publication Date: 9/5/2026

Reference Information

CVE: CVE-2026-18238

IAVA: 2026-A-0971