What is CVE-2026-102255?

CVE-2026-102255 is a critical-severity vulnerability in SonicWall Sma1000, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 10.0/10. Published 2026-10-07.

How severe is CVE-2026-102255?

Critical severity. CVSS v3 base score is 10.0 out of 10.

SSRF in SonicWall Sma1000

CVE-2026-102255

A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path. By abusing this path, a remote unauthenticated attacker could potentially exploit this vulnerability to direct the appliance to issue requests on their behalf and reach internal functionality and perform unauthorized operations.

Published 2026-10-07 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

SonicWall Sma1000 — versions 12.4.3-03526 (platform-hotfix) and older versions, 12.5.0-02952 (platform-hotfix) and older versions

Weakness classification (CWE)

References

psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0017 (vendor-advisory)

Frequently asked questions

What is CVE-2026-102255?: CVE-2026-102255 is a critical-severity vulnerability in SonicWall Sma1000, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 10.0/10. Published 2026-10-07.
How severe is CVE-2026-102255?: Critical severity. CVSS v3 base score is 10.0 out of 10.