Threat Intelligence / CVE / CVE-2026-15409

CVE-2026-15409 — SonicWall SMA1000

CISA KEV

CVSS v3.1 10 (CRITICAL) · Priority 9/10 · Published 2026-07-14

As of 2026-07-15, CVE-2026-15409 is a CRITICAL-severity vulnerability in SonicWall SMA1000, CVSS v3.1 10. It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-07-14), with a US federal remediation deadline of 2026-07-17. Threadlinqs Intelligence links 10 tracked threat campaigns to CVE-2026-15409, most recently “Edge Infrastructure Under Siege: Tenable and SentinelOne Datasets Reveal Convergent Nation-State and Criminal Exploitation of Perimeter Devices”.

Last updated: 2026-07-15

What is CVE-2026-15409?

A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. A remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.

The record classifies CVE-2026-15409 under weakness class CWE-918. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 60 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 10 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA KEV: Listed since 2026-07-14, federal remediation deadline 2026-07-17
Threadlinqs priority: 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published: 2026-07-14, last modified 2026-07-15

Is CVE-2026-15409 being exploited?

CISA added CVE-2026-15409 to the Known Exploited Vulnerabilities catalog on 2026-07-14, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-07-17 under BOD 22-01. Weaponised exploit code for CVE-2026-15409 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 48 in the Threadlinqs vulnerability feed.

HORKimhab/CVE-2026-15409 (github)

Affected products and versions

SonicWall: SMA1000

How to fix CVE-2026-15409

Because CVE-2026-15409 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-07-17. No vendor patch reference has been recorded for CVE-2026-15409 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-15409

10 tracked threats in the Threadlinqs corpus reference CVE-2026-15409, either in the campaign’s CVE list or as an indicator on the campaign record.

Edge Infrastructure Under Siege: Tenable and SentinelOne Datasets Reveal Convergent Nation-State and Criminal Exploitation of Perimeter Devices — HIGH · 2026-08-26
Actively Exploited SonicWall SMA1000 Zero-Days (CVE-2026-15409, CVE-2026-15410) Chained for Full Appliance Takeover Alongside Microsoft July 2026 Patch Tuesday (570 CVEs, 3 Zero-Days incl. SharePoint & AD FS EoP) — CRITICAL · 2026-07-17
SonicWall SMA1000 Zero-Days (CVE-2026-15409, CVE-2026-15410) Chained in Active Attacks, Assessed Ransomware Precursor — CRITICAL · 2026-07-17
SonicWall SMA1000 Zero-Day Vulnerabilities Chained for Full Appliance Compromise (CVE-2026-15409, CVE-2026-15410) — CRITICAL · 2026-07-16
SonicWall SMA1000 Zero-Day Vulnerabilities (CVE-2026-15409, CVE-2026-15410) Actively Exploited in Tandem — CRITICAL · 2026-07-15
SonicWall SMA1000 Zero-Days CVE-2026-15409 (Unauthenticated SSRF, CVSS 10.0) and CVE-2026-15410 (Post-Auth Code Injection, CVSS 7.2) Chained for Root Compromise, Actively Exploited — CRITICAL · 2026-07-15
CVE-2026-15409 / CVE-2026-15410: SonicWall SMA 1000 Zero-Day SSRF and Code Injection Chained for Unauthenticated RCE — CRITICAL · 2026-07-15
SonicWall SMA1000 SSRF (CVE-2026-15409, CVSS 10.0) Chained With Appliance Management Console Command Injection (CVE-2026-15410, CVSS 7.2) Under Active Zero-Day Exploitation — CRITICAL · 2026-07-15
SonicWall SMA1000 SSRF (CVE-2026-15409) and Code Injection (CVE-2026-15410) Actively Exploited in Tandem — CRITICAL · 2026-07-14
SonicWall SMA1000 SSRF (CVE-2026-15409) and Post-Auth Code Injection (CVE-2026-15410) Exploited as Zero-Days — CRITICAL · 2026-07-14

Sources

Enriched from CVE.org, NVD, CISA KEV, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-07-15. This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

psirt.global.sonicwall.com — vendor advisory

Full detection coverage & IOCs for threats exploiting CVE-2026-15409 are available via the Threadlinqs MCP server (Purple tier). View plans →

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