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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-40598

A Reflected cross-site scripting (XSS) vulnerability exists in the SMA100 series web interface, allowing a remote unauthenticated attacker to potentially execute arbitrary JavaScript code.

MEDIUM 6.1EPSS 46.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 46.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

A Reflected cross-site scripting (XSS) vulnerability exists in the SMA100 series web interface, allowing a remote unauthenticated attacker to potentially execute arbitrary JavaScript code.

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
46.15% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
sonicwall/sma 500v firmware · sonicwall/sma 210 firmware · sonicwall/sma 410 firmware
Source
PSIRT@sonicwall.com
EPSS trend
0%33%65%22 September 2026: 64.31%24 October 2026: 46.15%1 November 2026: 46.15%22 September 20261 November 2026

EPSS moved from 64.3% on 22 September 2026 to 46.2% on 1 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.