Detections
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Oracle Linux 10 : wireshark (ELSA-2026-84721)

critical Nessus Plugin ID 367393

Synopsis

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

Description

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-84721 advisory.

 - Fix Heap-based Buffer Overflow in Wireshark (CVE-2026-95389)
 - Fix DoS via heap-based buffer overflow in SPDY dissector (CVE-2026-95387)
 - Fix DoS via X.509IF protocol dissector crash (CVE-2026-76928)
 - 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)
 - Fix DoS via C12.22 protocol dissector crash (CVE-2026-76879)

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-2026-84721.html

Plugin Details

Severity: Critical

ID: 367393

File Name: oraclelinux_ELSA-2026-84721.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 10/19/2026

Updated: 10/20/2026

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: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-95387

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:10, 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: 10/19/2026

Vulnerability Publication Date: 10/8/2024

Reference Information

CVE: CVE-2026-76879, CVE-2026-76880, CVE-2026-76886, CVE-2026-76919, CVE-2026-76927, CVE-2026-76928, CVE-2026-95387, CVE-2026-95389

IAVB: 2026-B-0239-S, 2026-B-0286