Cyber Resilience

CVE-2026-15409

SSRF in Sonicwall Sma6210 Firmware 12.4.3-03245 … 12.5.0-02800

CISA KEVActive ExploitationEUVD ExploitedRansomware-linkedSSRF
Published
14 July 2026
Modified
16 July 2026
KEV Added
14 July 2026
Patch / advisory
CVSS Score v3.1 10.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.85 99.7th percentile
Risk Priority 100 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-15409 is a critical-severity SSRF (CWE-918) vulnerability in Sonicwall Sma8200V. Its CVSS base score is 10.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 0.3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

The strongest mitigations our analysis identified map to AC-4 (Information Flow Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

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.

CWE(s)
KEV Date Added
14 July 2026

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-83548Same product: Sonicwall Sma6210both on KEV
CVE-2026-83549Same product: Sonicwall Sma6210both on KEV
CVE-2026-15410Same product: Sonicwall Sma6210both on KEV
CVE-2025-40602Same product: Sonicwall Sma6210both on KEV
CVE-2026-4112Same product: Sonicwall Sma6210
CVE-2021-20016Same vendor: Sonicwallboth on KEV
CVE-2021-20028Same vendor: Sonicwallboth on KEV
CVE-2025-2170Same vendor: Sonicwall
CVE-2025-23006Same product: Sonicwall Sma6210both on KEV
CVE-2019-7483Same vendor: Sonicwallboth on KEV

Affected Assets

sonicwall
sma6210 firmware
12.4.3-03245, 12.4.3-03387, 12.4.3-03434, 12.5.0-02283, 12.5.0-02624
sonicwall
sma7210 firmware
12.4.3-03245, 12.4.3-03387, 12.4.3-03434, 12.5.0-02283, 12.5.0-02624
sonicwall
sma8200v
12.4.3-03245, 12.4.3-03387, 12.4.3-03434, 12.5.0-02283, 12.5.0-02624

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.3.6
  • V1.5.3
  • V5.3.2
  • V10.4.7

Mitigating Controls (NIST 800-53 r5) AI

Information flow enforcement can restrict which destinations the server is allowed to contact on behalf of users.

Input validation directly stops untrusted URLs from being accepted and fetched without destination checks.

Boundary protection limits the network reach of server-initiated requests even if SSRF occurs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

DE.CM-09 partial match
prevents

Runtime monitoring of web applications and services can detect anomalous outbound requests indicative of SSRF.

ID.RA-01 partial match
prevents

Vulnerability identification processes can discover and record SSRF flaws in web applications.

PR.IR-01 partial match
prevents

Network segmentation and egress controls can limit the damage from successful SSRF requests.

PR.PS-06 partial match
prevents

Secure development practices directly include input validation and destination allow-listing that prevent SSRF.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

prevents

Operational threat data describing SSRF campaigns can be used to tighten outbound-request allow-lists and detection rules before attackers exploit them.

References