FreeBSD : miniupnpd -- Integer underflow in SOAPAction header parsing (43dc274d-f74b-4420-8ef8-d2e108213002)

high Nessus Plugin ID 366760

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 43dc274d-f74b-4420-8ef8-d2e108213002 advisory.

An integer underflow in the SOAPAction header parsing in ParseHttpHeaders() lets a remote attacker trigger an out-of-bounds read by sending a malformed SOAPAction header containing a single quote. This can crash miniupnpd or disclose memory beyond the HTTP request buffer.

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

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 366760

File Name: freebsd_pkg_43dc274df74b44208ef8d2e108213002.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 10/17/2026

Updated: 10/17/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.49

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-5720

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 5

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:miniupnpd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 10/16/2026

Vulnerability Publication Date: 4/17/2026

Reference Information

CVE: CVE-2026-5720

Detections

Analytics