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 106 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
12 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
- Sophos X-Ops: Attackers Impersonate Claude, ChatGPT, Copilot and Perplexity to Distribute Infostealers, Backdoors and Malicious Browser Extensions — HIGH · 2026-08-23
- QuoIntelligence Weekly Snapshot W32 2026: DOUBLECUP ClickFix loader, UTA0533 SonicWall SMA1000 zero-day chain (CVE-2026-15409/15410), Greatness AiTM/device-code PhaaS, EtherRAT blockchain C2 — HIGH · 2026-08-06
- 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 . This product uses the NVD API but is not endorsed or certified by the NVD.