CVE intelligence

CVE-2026-0516

Vulnerability intelligence

Published Aug 5, 2026Sources checked Oct 7, 2026

6.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-0516 and is rated Medium severity with a CVSS score of 6.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

SonicWall PSIRT Advisories guidance

Vendor revision: Aug 11, 2026

Vendor remediation details

Install the applicable fixed SonicWall release for your product and branch.

Vendor-listed releases

Fixed Platforms: Fixed Versions
Gen6 Hardware Firewalls - SOHO 250, SOHO 250W, TZ 350, TZ 350W, TZ 500, TZ 500W, NSa 4600, NSa 4650, NSa 5600, NSa 5650, NSa 6600, NSa 6650: Please use the provided workaround
Gen7 Hardware Firewalls - TZ 270, TZ 270W, TZ 370, TZ 370W, TZ 470, TZ 470W, TZ 570, TZ 570W, TZ 570P, TZ 670, NSa 2700, NSa 3700, NSa 4700, NSa 5700, NSa 6700, NSsp 10700, NSsp 11700, NSsp 13700, NSsp 15700 Gen7 NSv - NSv 270, NSv 470, NSv 870 (ESX, KVM, HYPER-V, AWS, Azure): Please use the provided workaround (Fix for GEN7 planned in next release)
Gen8 Hardware Firewalls - TZ 80, TZ 280, TZ 280W, TZ 380, TZ 380W, TZ 480, TZ 580, TZ 680, NSa 2800, NSa 3800, NSa 4800, NSa 5800 Gen8 NSv - NSv XS, NSv S, NSv M, NSv L (ESX, KVM, HYPER-V, AWS, Azure): 8.2.2-8015 and higher versions

CISA KEVNot listedBased on the latest collected catalog

EPSS0.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-0516?

A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall management users to arbitrary web domains.

Source: NVD