Medium severity · published Aug 5, 2026
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…
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SO
SonicOS · SonicWall
6.5.5.2-28n and older versions; 7.0.1-5169 and older versions; 7.3.3-7015 and older versions; 8.2.1-8010 and older versions · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0516
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0516
psirt.global.sonicwall.com
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0009
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