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CVE-2025-40598 is a reflected cross-site scripting vulnerability in the web management interface of SonicWall SMA100 Series appliances, including SMA 210, 410, and 500v. The flaw allows untrusted input supplied in a crafted web request to be reflected back into a server-generated page without adequate sanitization or output encoding, enabling attacker-controlled JavaScript to execute in a victim’s browser. The issue is remotely reachable and does not require authentication by the attacker. Research associated with the vulnerability also noted that basic XSS payloads were effective against the appliance and that the Web Application Firewall on management interfaces appeared not to provide protection in the tested configuration. Affected versions include firmware 10.2.1.15 and earlier.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in SonicWall SMA 100 Series appliances that could allow denial-of-service or code execution.
A specific vulnerability in SonicWall SMA100 referenced as part of a set of memory corruption issues (stack/heap overflow context implied by the segment title).
A reflected XSS vulnerability in SonicWall SMA100 series SSL-VPN appliances that allows malicious script injection in a user's browser via a crafted link.
A reflected cross-site scripting vulnerability in the SonicWall SMA 100 Series web interface that may allow a remote unauthenticated attacker to execute arbitrary JavaScript code.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.