CVE-2026-83549

CRITICALPre-NVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-09-02), indicating real-world exploitation has been confirmed by US federal agencies. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa-adp, cisa_kev, epss, ghsa
Trending — KEV-added this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 2%CVSS: 7.8Exploit: cisa kev · ssvc activeExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Post-authentication Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) which in specific conditions could potentially enable a remote authenticated attacker as administrator to execute arbitrary OS commands, resulting in remote code execution.

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
2%
EPSS %ILE
75%
KEV
⚠ Exploited

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

Security Advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016

Vendor Advisories for CVE-2026-83549(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 46× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-06 13:48 UTCEPSS rescore
  2. 2026-09-06 11:33 UTCGHSA enrichment
  3. 2026-09-06 07:10 UTCGHSA enrichment
  4. 2026-09-06 02:47 UTCGHSA enrichment
  5. 2026-09-05 22:24 UTCGHSA enrichment
  6. 2026-09-05 18:00 UTCEG score recompute
  7. 2026-09-05 17:59 UTCGHSA enrichment
  8. 2026-09-05 15:31 UTCEPSS rescore
  9. 2026-09-05 13:36 UTCGHSA enrichment
  10. 2026-09-05 09:13 UTCGHSA enrichment
  11. 2026-09-05 04:50 UTCGHSA enrichment
  12. 2026-09-05 00:26 UTCGHSA enrichment
  13. 2026-09-04 20:03 UTCGHSA enrichment
  14. 2026-09-04 17:38 UTCCISA KEV update
  15. 2026-09-04 15:38 UTCEG score recompute
  16. 2026-09-04 15:38 UTCGHSA enrichment
  17. 2026-09-04 11:15 UTCGHSA enrichment
  18. 2026-09-04 06:51 UTCEG score recompute
  19. 2026-09-04 06:51 UTCGHSA enrichment
  20. 2026-09-04 05:07 UTCEPSS rescore
  21. 2026-09-04 02:25 UTCGHSA enrichment
  22. 2026-09-03 22:00 UTCGHSA enrichment
  23. 2026-09-03 17:37 UTCGHSA enrichment
  24. 2026-09-03 13:13 UTCGHSA enrichment
  25. 2026-09-03 09:17 UTCGHSA enrichment
Show 21 more
  1. 2026-09-03 04:54 UTCGHSA enrichment
  2. 2026-09-03 01:17 UTCGHSA enrichment
  3. 2026-09-02 20:52 UTCGHSA enrichment
  4. 2026-09-02 20:01 UTCGHSA enrichment
  5. 2026-09-02 19:30 UTCGHSA enrichment
  6. 2026-09-02 18:35 UTCEG score recompute
  7. 2026-09-02 18:34 UTCGHSA enrichment
  8. 2026-09-02 17:59 UTCGHSA enrichment
  9. 2026-09-02 17:35 UTCEG score recompute▲ 1.20
  10. 2026-09-02 17:35 UTCGHSA enrichment
  11. 2026-09-02 17:33 UTCCISA KEV update
  12. 2026-09-02 16:04 UTCEG score recompute
  13. 2026-09-02 16:04 UTCGHSA enrichment
  14. 2026-09-02 14:12 UTCEPSS rescore
  15. 2026-09-02 04:39 UTCGHSA enrichment
  16. 2026-09-02 04:02 UTCEG score recompute
  17. 2026-09-02 04:02 UTCGHSA enrichment
  18. 2026-09-01 22:19 UTCEG score recompute▲ 7.80
  19. 2026-09-01 22:18 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  20. 2026-09-01 21:33 UTCEG score recompute
  21. 2026-09-01 21:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2026-83549?
CVE-2026-83549 is a critical vulnerability published on September 1, 2026. Post-authentication Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) which in specific conditions could potentially enable a remote authenticated attacker as administrator…
When was CVE-2026-83549 disclosed?
CVE-2026-83549 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-83549 actively exploited?
Yes. CISA added CVE-2026-83549 to the Known Exploited Vulnerabilities catalog on September 2, 2026, affecting SonicWall SMA1000 Appliances. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-83549?
CVE-2026-83549 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2026-83549?
CVE-2026-83549 affects SonicWall SMA1000 Appliances. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-83549?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-83549, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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