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

mediumCVSS 6.5CVE-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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 6.5
Published: 2026-08-05
Last updated: 2026-08-05
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-0516

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-05160.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-0516	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

low[NEW] [low] SonicWall SonicOS: Vulnerability Enables Information Disclosurecert-bund
unknownVulnerability in Sonicwall SonicOS (August 6, 2026)cert-fr-avis

Recent advisories for A improper neutralization

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-68747: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injecti…nvd · 2026-08-06
criticalCVE-2026-34191: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerabi…nvd · 2026-08-06
criticalCVE-2026-5134: Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerabil…nvd · 2026-08-06
mediumCVE-2026-8166: Improper neutralization of input during web page generation ('cross-site scripting') vulnerabil…nvd · 2026-08-06
unknownCVE-2026-66297: Improper Neutralization of Special Elements used in an OS Command (OS Command Injection) vulne…nvd · 2026-08-05
highCVE-2026-16793: An improper neutralization of special elements used in an operating system command vulnerabili…nvd · 2026-08-04