CVE-2026-100289

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreHIGH confidence

Score 5.0 from GitHub Security Advisory published 2026-09-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.0Exploit: None knownExposed services: Not assessed

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

Missing authorization in the gateway network scan token API in Devolutions Server 2026.3.5.0 and earlier allows an authenticated low-privileged user to generate a network scan token and perform internal network discovery and port scanning through the gateway via a crafted API request.

CVSS v3
5.0
EG Score
5.0MEDIUMhigh confidence
EG Risk
27
EG Risk 27/100CISA SSVC

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
Severity50% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 29, 2026

Last Modified

September 29, 2026

Advisory Details (1)

Auto-updated Sep 29, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

DEVO-2026-0034 - Advisory - Security

https://devolutions.net/security/advisories/DEVO-2026-0034/

Vendor Advisories for CVE-2026-100289(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 18× in last 7d / 18× 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. 2026-10-04 13:29 UTCGHSA enrichment
  2. 2026-10-03 14:40 UTCEG score recompute
  3. 2026-10-03 14:40 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-02 15:47 UTCEG score recompute
  6. 2026-10-02 15:47 UTCGHSA enrichment
  7. 2026-10-01 19:49 UTCEPSS rescore
  8. 2026-10-01 16:59 UTCGHSA enrichment
  9. 2026-09-30 17:56 UTCEG score recompute
  10. 2026-09-30 17:55 UTCGHSA enrichment
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-29 19:04 UTCEG score recompute
  13. 2026-09-29 19:04 UTCGHSA enrichment
  14. 2026-09-29 17:27 UTCEG score recompute▲ 5.00
  15. 2026-09-29 17:24 UTCNVD updateCVSS v3 → 5 · severity → MEDIUM
  16. 2026-09-29 16:24 UTCNVD update
  17. 2026-09-29 15:58 UTCEG score recompute
  18. 2026-09-29 15:58 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100289?
CVE-2026-100289 is a medium vulnerability published on September 29, 2026. Missing authorization in the gateway network scan token API in Devolutions Server 2026.3.5.0 and earlier allows an authenticated low-privileged user to generate a network scan token and perform internal network discovery and port scanning through the gateway via a crafted API request.
When was CVE-2026-100289 disclosed?
CVE-2026-100289 was first published on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100289 actively exploited?
CVE-2026-100289 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100289?
CVE-2026-100289 has a CVSS v3.1 base score of 5.0 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-100289?
No fix for CVE-2026-100289 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-100289 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-100289

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