CVE-2026-78103

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

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

WatchGuard Dimension provides a client-side lock/unlock UI control for management changes. The server-side configuration endpoint does not enforce this lock/unlock workflow state, allowing an authenticated administrator to submit configuration changes directly to the endpoint without first completing the UI unlock step. This allows an authenticated read-write administrator session to bypass the intended editing workflow and overwrite configuration changes being made by another concurrent administrator session.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

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
Severity51% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

CVE-2026-78103 — Dimension Log Server Configuration Lock Bypass Vulnerability

https://psirt.watchguard.com/CVE-2026-78103

Vendor Advisories for CVE-2026-78103(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 / 59× 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. 2026-09-19 01:19 UTCEG score recompute
  2. 2026-09-19 01:19 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 00:02 UTCEG score recompute
  5. 2026-09-18 00:02 UTCGHSA enrichment
  6. 2026-09-16 22:38 UTCEG score recompute
  7. 2026-09-16 22:38 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 20:57 UTCEG score recompute
  11. 2026-09-15 20:57 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 19:04 UTCGHSA enrichment
  15. 2026-09-13 17:46 UTCEG score recompute
  16. 2026-09-13 17:46 UTCGHSA enrichment
  17. 2026-09-12 16:28 UTCEG score recompute
  18. 2026-09-12 16:28 UTCGHSA enrichment
  19. 2026-09-11 15:10 UTCEG score recompute
  20. 2026-09-11 15:10 UTCGHSA enrichment
  21. 2026-09-10 13:50 UTCEG score recompute
  22. 2026-09-10 13:50 UTCGHSA enrichment
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-09 12:32 UTCEG score recompute
  25. 2026-09-09 12:31 UTCGHSA enrichment
Show 34 more
  1. 2026-09-08 22:01 UTCEPSS rescore
  2. 2026-09-08 11:14 UTCEG score recompute
  3. 2026-09-08 11:13 UTCGHSA enrichment
  4. 2026-09-07 08:26 UTCEG score recompute
  5. 2026-09-07 08:26 UTCGHSA enrichment
  6. 2026-09-06 13:48 UTCEPSS rescore
  7. 2026-09-06 07:02 UTCEG score recompute
  8. 2026-09-06 07:02 UTCGHSA enrichment
  9. 2026-09-05 05:44 UTCEG score recompute
  10. 2026-09-05 05:44 UTCGHSA enrichment
  11. 2026-09-04 05:07 UTCEPSS rescore
  12. 2026-09-04 04:26 UTCGHSA enrichment
  13. 2026-09-03 03:07 UTCEG score recompute
  14. 2026-09-03 03:07 UTCGHSA enrichment
  15. 2026-09-02 14:12 UTCEPSS rescore
  16. 2026-09-02 01:49 UTCEG score recompute
  17. 2026-09-02 01:49 UTCGHSA enrichment
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-09-01 04:40 UTCEPSS rescore
  20. 2026-09-01 04:40 UTCEPSS rescore
  21. 2026-09-01 00:32 UTCGHSA enrichment
  22. 2026-08-30 23:13 UTCEG score recompute
  23. 2026-08-30 23:13 UTCGHSA enrichment
  24. 2026-08-30 19:18 UTCEPSS rescore
  25. 2026-08-30 19:17 UTCEPSS rescore
  26. 2026-08-30 01:22 UTCEPSS rescore
  27. 2026-08-29 21:55 UTCEG score recompute
  28. 2026-08-29 21:55 UTCGHSA enrichment
  29. 2026-08-28 21:42 UTCEPSS rescore
  30. 2026-08-28 20:36 UTCGHSA enrichment
  31. 2026-08-28 18:58 UTCGHSA enrichment
  32. 2026-08-28 02:18 UTCEG score recompute
  33. 2026-08-28 02:10 UTCEG score recompute
  34. 2026-08-28 02:07 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-78103?
CVE-2026-78103 is a medium vulnerability published on August 27, 2026. WatchGuard Dimension provides a client-side lock/unlock UI control for management changes. The server-side configuration endpoint does not enforce this lock/unlock workflow state, allowing an authenticated administrator to submit configuration changes directly to the endpoint without first…
When was CVE-2026-78103 disclosed?
CVE-2026-78103 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78103 actively exploited?
CVE-2026-78103 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.0% of all scored CVEs.
What is the CVSS score of CVE-2026-78103?
CVE-2026-78103 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-78103?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78103, 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.

Dependency Blast Radius

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