Detections
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FreeBSD : nginx -- multiple vulnerabilities (56feeac6-8263-11f1-92ba-bc24110523fe)

critical Nessus Plugin ID 327771

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 multiple vulnerabilities as referenced in the 56feeac6-8263-11f1-92ba-bc24110523fe advisory.

 The nginx development team reports:
 Buffer overflow when using map and regex (CVE-2026-42533). Severity: major.
 Memory disclosure when using ngx_http_slice_module (CVE-2026-60005). Severity: medium.
 Use-after-free when using ngx_http_ssi_module (CVE-2026-56434). Severity: medium.

Tenable has extracted the preceding description block directly from the FreeBSD 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 packages.

See Also

https://nginx.org/en/security_advisories.html

http://www.nessus.org/u?97187fcd

Plugin Details

Severity: Critical

ID: 327771

File Name: freebsd_pkg_56feeac6826311f192babc24110523fe.nasl

Version: 1.1

Type: Local

Published: 7/18/2026

Updated: 7/18/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Percentile: 96.35

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-60005

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

CVSS Score Source: CVE-2026-42533

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.2

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-42533

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:nginx, p-cpe:/a:freebsd:freebsd:nginx-devel, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/18/2026

Vulnerability Publication Date: 7/15/2026

Reference Information

CVE: CVE-2026-42533, CVE-2026-56434, CVE-2026-60005