What is CVE-2026-83548?
A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path. A remote unauthenticated attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive functionality and perform unauthorized operations.
The record classifies CVE-2026-83548 under weakness classes CWE-918, CWE-441. 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 70 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 - EPSS (FIRST)
- 0.2% probability of exploitation in the next 30 days, higher than 18.1% of all scored CVEs
- CISA KEV
- Listed since 2026-09-02, federal remediation deadline 2026-09-05
- Threadlinqs priority
- 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- Published
- 2026-09-01
Is CVE-2026-83548 being exploited?
CISA added CVE-2026-83548 to the Known Exploited Vulnerabilities catalog on 2026-09-02, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-09-05 under BOD 22-01. It currently carries a trending score of 44 in the Threadlinqs vulnerability feed.
Affected products and versions
- SonicWall: SMA1000
How to fix CVE-2026-83548
Vendor advisory: https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016. Because CVE-2026-83548 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-09-05. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2026-83548
2 tracked threats in the Threadlinqs corpus reference CVE-2026-83548, either in the campaign’s CVE list or as an indicator on the campaign record.
- Eclypsium InfraTrust Report: Mass Active Exploitation of Network Management Systems (Cisco FMC/ISE CVE-2026-20079, CVE-2026-76460; SonicWall SMA 1000 CVE-2026-83548/83549; Linux Kernel CopyFail CVE-2026-31431) — CRITICAL · 2026-09-23
- SonicWall SMA1000 Chained Vulnerabilities (CVE-2026-83548, CVE-2026-83549) Exploited in the Wild — CRITICAL · 2026-09-03
Sources
Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV. This product uses the NVD API but is not endorsed or certified by the NVD.