CVE-2026-78498

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 82% 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.

A server-side request forgery (SSRF) vulnerability WatchGuard Dimension Email Server Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.

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
18%
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-2026-78498 — Dimension Server-Side Request Forgery via Email Server Test Settings

https://psirt.watchguard.com/CVE-2026-78498

Vendor Advisories for CVE-2026-78498(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 21× in last 7d / 69× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 19:21 UTCGHSA enrichment
  3. 2026-09-19 21:44 UTCEG score recompute
  4. 2026-09-19 21:44 UTCGHSA enrichment
  5. 2026-09-19 00:08 UTCEG score recompute
  6. 2026-09-19 00:07 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 02:31 UTCEG score recompute
  9. 2026-09-18 02:31 UTCGHSA enrichment
  10. 2026-09-17 04:54 UTCEG score recompute
  11. 2026-09-17 04:54 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 07:17 UTCEG score recompute
  14. 2026-09-16 07:17 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 09:40 UTCEG score recompute
  17. 2026-09-15 09:40 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 12:04 UTCEG score recompute
  21. 2026-09-14 12:03 UTCGHSA enrichment
  22. 2026-09-13 14:25 UTCGHSA enrichment
  23. 2026-09-12 16:48 UTCEG score recompute
  24. 2026-09-12 16:48 UTCGHSA enrichment
  25. 2026-09-11 19:11 UTCEG score recompute
Show 44 more
  1. 2026-09-11 19:11 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 21:34 UTCEG score recompute
  5. 2026-09-10 21:34 UTCGHSA enrichment
  6. 2026-09-09 23:57 UTCGHSA enrichment
  7. 2026-09-09 00:36 UTCEG score recompute
  8. 2026-09-09 00:36 UTCGHSA enrichment
  9. 2026-09-08 22:01 UTCEPSS rescore
  10. 2026-09-07 18:48 UTCEG score recompute
  11. 2026-09-07 18:48 UTCGHSA enrichment
  12. 2026-09-06 21:11 UTCEG score recompute
  13. 2026-09-06 21:11 UTCGHSA enrichment
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-05 23:34 UTCEG score recompute
  16. 2026-09-05 23:34 UTCGHSA enrichment
  17. 2026-09-05 01:57 UTCEG score recompute
  18. 2026-09-05 01:57 UTCGHSA enrichment
  19. 2026-09-04 04:20 UTCGHSA enrichment
  20. 2026-09-03 06:44 UTCEG score recompute
  21. 2026-09-03 06:43 UTCGHSA enrichment
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-02 09:02 UTCEG score recompute
  24. 2026-09-02 09:02 UTCGHSA enrichment
  25. 2026-09-01 13:54 UTCEPSS rescore
  26. 2026-09-01 11:19 UTCEG score recompute
  27. 2026-09-01 11:19 UTCGHSA enrichment
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-09-01 04:40 UTCEPSS rescore
  30. 2026-08-31 13:42 UTCEG score recompute
  31. 2026-08-31 13:41 UTCGHSA enrichment
  32. 2026-08-30 19:18 UTCEPSS rescore
  33. 2026-08-30 19:17 UTCEPSS rescore
  34. 2026-08-30 15:50 UTCEG score recompute
  35. 2026-08-30 15:50 UTCGHSA enrichment
  36. 2026-08-30 01:22 UTCEPSS rescore
  37. 2026-08-29 18:13 UTCEG score recompute
  38. 2026-08-29 18:13 UTCGHSA enrichment
  39. 2026-08-28 21:42 UTCEPSS rescore
  40. 2026-08-28 20:34 UTCGHSA enrichment
  41. 2026-08-28 18:58 UTCGHSA enrichment
  42. 2026-08-28 02:18 UTCEG score recompute
  43. 2026-08-28 02:09 UTCEG score recompute
  44. 2026-08-28 02:07 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78498?
CVE-2026-78498 is a medium vulnerability published on August 27, 2026. A server-side request forgery (SSRF) vulnerability WatchGuard Dimension Email Server Test configuration allows an authenticated privileged attacker to enumerate exposed network services on adjacent network systems.
When was CVE-2026-78498 disclosed?
CVE-2026-78498 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-2026-78498 actively exploited?
CVE-2026-78498 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 81.9% of all scored CVEs.
What is the CVSS score of CVE-2026-78498?
CVE-2026-78498 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-78498?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78498, 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

Explore the affected products and dependency analysis for CVE-2026-78498

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