Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2026-15409

SMA1000 Server-Side Request Forgery

SonicWall / SMA1000 · 12.4.3-03245 to <= 12.4.3-03434

Watch CVE-2026-15409 Browse KEV feed
Severity
CVSS 10.0 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
6.8%
First observed
17 Jul 2026
Last observed
13 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-15409 is an unauthenticated vulnerability affecting SonicWall SMA1000. A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. A remote...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

SonicWall / SMA1000 12.4.3-03245 to <= 12.4.3-03434.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface

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.

SonicWall Affected
SMA1000
Through 12.4.3-03434 Through 12.5.0-02800
View vendor advisory (opens in new tab)
Published
14 Jul 2026
Exploitation Reported
14 Jul 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

edge cisa nuclei_scanner

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Sonicwall PSIRT

Recorded 14 Jul 2026

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 17 Jul 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Proof of concept available

GitHub

Recorded 15 Jul 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Sonicwall PSIRT First 2026-07-14 18:18 UTC
CISA 2026-07-14 19:00 UTC
CVE 2026-07-14 20:31 UTC
All CISA Advisories 2026-07-14 21:20 UTC
Daily CyberSecurity 2026-07-15 00:00 UTC
The Hacker News 2026-07-15 05:30 UTC
Rapid7 2026-07-15 16:19 UTC
Tenable Blog 2026-07-15 17:14 UTC
Previdian Sensors 2026-07-17 15:20 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

815

Attempts observed

130

Unique attacker IPs

31

Attacker countries

AE · BD · BE · BG · CA · CH · CL · CN · CZ · DE · FR · GB · HK · ID · IS · JP · LT · MY · NL · PA · PL · RO · RU · SE · SG · SI · TW · US · UZ · VU · YE

23

Sensors observed

CVE-2026-15409 exploitation attempts over the last 91 days

Daily events observed by Previdian sensors

Updated 14 Oct 2026

0
2
20
12
26
10
42
6
21
2
12
5
11
24
20
108
111
1
0
12
12
4
12
1
0
0
0
1
0
0
0
2
2
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
2
5
16
7
2
0
1
127
0
0
4
63
4
7
0
7
2
0
0
0
1
2
4
15
4
0
2
4
1
0
0
51
3
0
0
1
0
16 Jul 4 Aug 23 Aug 11 Sep 14 Oct

First observed 17 Jul 2026 · Last observed 13 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
243
9
1

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2026/CVE-2026-15409.yaml 22 Jul 2026

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

10.0 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

6.8%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Server-Side Request Forgery (SSRF) CWE-918

Recent mention · The Hacker News

Critical SonicWall SMA 1000 Flaw Targeted in 135 Exploitation Attempts After Patch

Ravie LakshmananOct 12, 2026Vulnerability / Network Security Threat actors have been observed exploiting a recently disclosed critical security flaw in SonicWall Secure Mobile Access (SMA) 1000 appliances within days of public disclosure. The vulnerability, tracked as...

Read full advisory

All CVSS Scores

CVSS v3.1 10.0 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.0 10.0 Critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

All Mentions

Recent mention · The Hacker News

Critical SonicWall SMA 1000 Flaw Targeted in 135 Exploitation Attempts After Patch

The Hacker News · 12 Oct 2026

Ravie LakshmananOct 12, 2026Vulnerability / Network Security Threat actors have been observed exploiting a recently disclosed critical security flaw in SonicWall Secure Mobile Access (SMA) 1000 appliances within days of public disclosure. The vulnerability, tracked as CVE-2026-102255 (CVSS score: 10.0), is a case of pre-authenticated server-side request forgery (SSRF) that could allow a remote attacker "to direct the appliance to issue requests on their behalf and reach internal functionality and perform unauthorized operations." Patches for the flaw were released by SonicWall on October...

Recent mention · The Hacker News

SonicWall Patches CVSS 10.0 Pre-Authentication SSRF Flaw in SMA1000 Appliances

The Hacker News · 07 Oct 2026

Swati KhandelwalOct 07, 2026Vulnerability / Network Security SonicWall has released hotfixes for four flaws in its SMA1000 appliances, the gateways that give remote workers access to a company's network and applications. The most serious could allow an attacker without a login to send requests through the appliance and reach internal functions. SonicWall rates it 10.0 on the CVSS scale and says it has no evidence that any of the four flaws is being used in attacks. The most serious flaw, tracked as CVE-2026-102255, is a server-side request forgery (SSRF) bug in WorkPlace, the portal that...

Recent mention · TheRegister

SonicWall's SMA1000 boxes under active attack again

TheRegister · 02 Sep 2026

Miscreants use chained zero days to pwn boxen as third-party SOCs say further attacks 'almost certain'

Recent mention · Tenable Blog

Edge infrastructure under siege: what two independent datasets reveal about who's exploiting your perimeter

Tenable Blog · 26 Aug 2026

A joint Tenable-SentinelOne analysis of 93 CVE-actor attribution pairs reveals that both state-sponsored actors and cybercriminals independently converge on the same edge infrastructure. Special thanks to SentinelOne® Incident Readiness & Response for their contributions to this publication.It is the shared attack surface where state-sponsored threat actors and financially motivated criminal groups independently converge — not the province of a single adversary category, and not exclusively a nation-state problem, despite two years of headlines about China-nexus actors targeting Ivanti,...

Recent mention · Rapid7

Metasploit Wrap Up: Lot of summer shells and fit http profiles

Rapid7 · 14 Aug 2026

This wrap-up brings a full-on shell parade. Thirteen shiny new modules landed, starting with a buffet of RCEs. WordPress WP2Shell, Ghost CMS, Joomla JCE, Langflow, OpenCATS, Pterodactyl Panel, SonicWall SMA1000, Ray Dashboard, a Pix-for-WooCommerce, and for those who like their exploits closer to the bare-metal, the Fragnesia Linux kernel LPE (CVE-2026-46300). Metasploit also got the glow-up of the summer with the new http malleable profiles, MCP functionality and linux multi fetch payloads (more details on the [official 6.5 release blog...

Recent mention · Daily CyberSecurity

SonicWall SMA1000 CVE-2026-15409 (CVSS 10.0) RCE Exploited in the Wild as Public PoC Drops

Daily CyberSecurity · 16 Jul 2026

TL;DR SonicWall patched a critical SonicWall SMA1000 vulnerability, CVE-2026-15409, on July 14, 2026. Attackers are exploiting it in The post SonicWall SMA1000 CVE-2026-15409 (CVSS 10.0) RCE Exploited in the Wild as Public PoC Drops appeared first on Daily CyberSecurity.

Recent mention · Tenable Blog

CVE-2026-15409, CVE-2026-15410: SonicWall SMA 1000 zero-day vulnerabilities exploited in the wild

Tenable Blog · 15 Jul 2026

SonicWall patched two recently exploited zero-day vulnerabilities in its SMA 1000 Series secure remote access appliances which may have been chained for unauthenticated remote code execution.Key takeawaysCVE-2026-15409 and CVE-2026-15410 are a pair of exploited vulnerabilities that may have been chained together to allow for code execution on SonicWall SMA1000 series appliances. Zero-day exploitation of these vulnerabilities has been observed and confirmed by SonicWall. Patches and indicators of compromise are available and urgent patching is recommended.BackgroundSonicWall's Secure Mobile...

Recent mention · Rapid7

Rapid7 MDR Team Discovers New SonicWall SMA1000 Zero Days being Actively Exploited (CVE-2026-15409, CVE-2026-15410)

Rapid7 · 15 Jul 2026

OverviewOn July 14, 2026, SonicWall published a security advisory addressing two vulnerabilities affecting SMA1000 Series remote access appliances, including the critical server-side request forgery (SSRF) vulnerability CVE-2026-15409 (CVSS 10.0) and the high-severity code injection vulnerability CVE-2026-15410. The advisory urges customers to immediately apply the latest platform hotfix releases.Successful exploitation of CVE-2026-15409 permits an unauthenticated attacker to open a websocket-based tunnel to arbitrary localhost-only services, while CVE-2026-15410 is a local privilege...

Recent mention · The Hacker News

Two SonicWall SMA 1000 Zero-Days Exploited, One Could Enable Admin Commands

The Hacker News · 15 Jul 2026

SonicWall has warned of active exploitation of two zero-day vulnerabilities impacting Secure Mobile Access (SMA) 1000 series appliances, one of which could be exploited to achieve arbitrary command execution. The vulnerabilities are listed below - CVE-2026-15409 (CVSS score: 10.0) - A Server-side request forgery (SSRF) vulnerability that a remote unauthenticated attacker could exploit to

Recent mention · Daily CyberSecurity

CVE-2026-15409: SonicWall SMA1000 SSRF Vulnerability (CVSS 10.0) Exploited in the Wild

Daily CyberSecurity · 15 Jul 2026

TL;DR SonicWall has released hotfixes for two actively exploited flaws in SMA1000 secure access appliances. The SonicWall SMA1000 The post CVE-2026-15409: SonicWall SMA1000 SSRF Vulnerability (CVSS 10.0) Exploited in the Wild appeared first on Daily CyberSecurity.

Recent mention · BleepingComputer

SonicWall warns of SMA1000 flaws exploited in zero-day attacks, patch now

BleepingComputer · 14 Jul 2026

SonicWall warns that threat actors have been exploiting two SMA1000 vulnerabilities, tracked as CVE-2026-15409 and CVE-2026-15410, in zero-day attacks and urges customers to install the newly released security updates. [...]

Recent mention · Sonicwall PSIRT

SonicWall SMA1000 Series Appliances Affected By Multiple Vulnerabilities

Sonicwall PSIRT · 14 Jul 2026

1) CVE-2026-15409 - A Server-side request forgery (SSRF) 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. CVSS Score: 10.0 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CWE-918: Server-Side Request Forgery (SSRF) 2) CVE-2026-15410 - Post-authentication improper control of generation of code ('Code Injection')Post-authentication improper control of generation of code ('Code Injection')...

Recent mention · All CISA Advisories

CISA Adds Four Known Exploited Vulnerabilities to Catalog

All CISA Advisories · 14 Jul 2026

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-15409 SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability CVE-2026-15410 SonicWall SMA1000 Appliances Code Injection Vulnerability CVE-2026-56155 Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability CVE-2026-56164 Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber...

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Ch4120N/CVE-2026-15409

github · Created 2026-08-03 14:59:04 UTC · 1 stars · AI assessment 90%

Proof-of-Concept exploit for CVE-2026-15409 (SonicWall SMA 1000 RCE) via Erlang distribution over WebSocket. Achieves unauthenticated remote code execution as couchdb user.

SonicWall SMA1000 - Server-Side Request Forgery

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 04:30 UTC

    Public PoC available

    Public proof-of-concept code published

  2. 04:30 UTC

    Nuclei template available

    Scanner coverage available

  3. 15:14 UTC

    Indicators of compromise added (130)

    Indicators of compromise recorded

  4. 15:14 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  5. 09:04 UTC

    Virtual patch available

    Compensating WAF rule available to block exploitation

  6. 17:14 UTC

    KEV confirmed by Tenable Blog

    Exploitation attested by an external source

  7. 16:19 UTC

    KEV confirmed by Rapid7

    Exploitation attested by an external source

  8. 05:30 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  9. 00:00 UTC

    KEV confirmed by Daily CyberSecurity

    Exploitation attested by an external source

  10. 21:20 UTC

    KEV confirmed by All CISA Advisories

    Exploitation attested by an external source

  11. 20:31 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  12. 19:39 UTC

    CVE published

    Vulnerability disclosed publicly

  13. 19:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  14. 18:18 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  15. 14:12 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-15409

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-15409",
  "confidence": "Confirmed",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.06795,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 815, "sensors": 23 }
}