Detections
Analytics

Oracle Linux 8 : wireshark (ELSA-2026-83657)

critical Nessus Plugin ID 366443

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-83657 advisory.

 - Fix DoS vulnerability in H.245 protocol dissector (CVE-2026-76927)
 - Fix DoS vulnerability in ESS protocol dissector (CVE-2026-76919)
 - Fix DoS via C12.22 protocol dissector crash (CVE-2026-76886)
 - Fix DoS via RRC protocol dissector out-of-bounds write (CVE-2026-76880)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected wireshark, wireshark-cli and / or wireshark-devel packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-83657.html

Plugin Details

Severity: Critical

ID: 366443

File Name: oraclelinux_ELSA-2026-83657.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/16/2026

Updated: 10/16/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.41

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-76927

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

CVSS Score Source: CVE-2026-76886

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:wireshark-cli, p-cpe:/a:oracle:linux:wireshark-devel, p-cpe:/a:oracle:linux:wireshark

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/15/2026

Vulnerability Publication Date: 10/8/2024

Reference Information

CVE: CVE-2026-76880, CVE-2026-76886, CVE-2026-76919, CVE-2026-76927

IAVB: 2026-B-0239-S