CVE-2026-57909

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 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
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: None knownExposed: 0

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

A path traversal vulnerability in WatchGuard Agent allows a remote, unauthenticated attacker on an adjacent network to execute arbitrary code on an affected system.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity94% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

CVE-2026-57909 — WatchGuard Agent path traversal allows unauthenticated remote code execution

https://psirt.watchguard.com/CVE-2026-57909

Vendor Advisories for CVE-2026-57909(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 56× in last 7d / 218× 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.

Showing the most recent 100 of 218 total refreshes for this CVE.

  1. 2026-09-21 03:14 UTCGHSA enrichment
  2. 2026-09-20 23:34 UTCEG score recompute
  3. 2026-09-20 23:34 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 19:54 UTCGHSA enrichment
  6. 2026-09-20 16:15 UTCGHSA enrichment
  7. 2026-09-20 12:36 UTCGHSA enrichment
  8. 2026-09-20 08:41 UTCGHSA enrichment
  9. 2026-09-20 04:23 UTCGHSA enrichment
  10. 2026-09-20 00:44 UTCGHSA enrichment
  11. 2026-09-19 21:05 UTCGHSA enrichment
  12. 2026-09-19 17:25 UTCEG score recompute
  13. 2026-09-19 17:25 UTCGHSA enrichment
  14. 2026-09-19 13:46 UTCGHSA enrichment
  15. 2026-09-19 10:07 UTCGHSA enrichment
  16. 2026-09-19 06:11 UTCGHSA enrichment
  17. 2026-09-19 02:30 UTCGHSA enrichment
  18. 2026-09-18 22:50 UTCEG score recompute
  19. 2026-09-18 22:50 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 19:11 UTCGHSA enrichment
  22. 2026-09-18 15:29 UTCGHSA enrichment
  23. 2026-09-18 11:45 UTCGHSA enrichment
  24. 2026-09-18 08:05 UTCGHSA enrichment
  25. 2026-09-18 04:27 UTCGHSA enrichment
Show 75 more
  1. 2026-09-18 00:48 UTCGHSA enrichment
  2. 2026-09-17 21:09 UTCEG score recompute
  3. 2026-09-17 21:09 UTCGHSA enrichment
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-17 14:37 UTCGHSA enrichment
  6. 2026-09-17 10:52 UTCGHSA enrichment
  7. 2026-09-17 07:01 UTCGHSA enrichment
  8. 2026-09-17 03:21 UTCGHSA enrichment
  9. 2026-09-16 23:06 UTCGHSA enrichment
  10. 2026-09-16 19:27 UTCEG score recompute
  11. 2026-09-16 19:27 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 13:04 UTCGHSA enrichment
  14. 2026-09-16 09:25 UTCEG score recompute
  15. 2026-09-16 09:25 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-16 04:35 UTCGHSA enrichment
  18. 2026-09-16 00:47 UTCGHSA enrichment
  19. 2026-09-15 21:01 UTCGHSA enrichment
  20. 2026-09-15 17:05 UTCGHSA enrichment
  21. 2026-09-15 13:26 UTCGHSA enrichment
  22. 2026-09-15 09:47 UTCGHSA enrichment
  23. 2026-09-15 06:08 UTCEG score recompute
  24. 2026-09-15 06:07 UTCGHSA enrichment
  25. 2026-09-15 03:11 UTCEPSS rescore
  26. 2026-09-15 02:23 UTCGHSA enrichment
  27. 2026-09-14 22:38 UTCGHSA enrichment
  28. 2026-09-14 18:59 UTCGHSA enrichment
  29. 2026-09-14 14:58 UTCGHSA enrichment
  30. 2026-09-14 11:19 UTCGHSA enrichment
  31. 2026-09-14 07:40 UTCGHSA enrichment
  32. 2026-09-14 04:01 UTCGHSA enrichment
  33. 2026-09-14 00:22 UTCGHSA enrichment
  34. 2026-09-13 20:43 UTCGHSA enrichment
  35. 2026-09-13 17:04 UTCEG score recompute
  36. 2026-09-13 17:04 UTCGHSA enrichment
  37. 2026-09-13 16:47 UTCEPSS rescore
  38. 2026-09-13 13:25 UTCGHSA enrichment
  39. 2026-09-13 09:46 UTCGHSA enrichment
  40. 2026-09-13 06:07 UTCGHSA enrichment
  41. 2026-09-13 02:28 UTCGHSA enrichment
  42. 2026-09-12 22:48 UTCGHSA enrichment
  43. 2026-09-12 19:08 UTCGHSA enrichment
  44. 2026-09-12 15:28 UTCEG score recompute
  45. 2026-09-12 15:28 UTCGHSA enrichment
  46. 2026-09-12 11:46 UTCGHSA enrichment
  47. 2026-09-12 08:07 UTCGHSA enrichment
  48. 2026-09-12 04:28 UTCGHSA enrichment
  49. 2026-09-12 00:49 UTCGHSA enrichment
  50. 2026-09-11 21:10 UTCGHSA enrichment
  51. 2026-09-11 17:31 UTCGHSA enrichment
  52. 2026-09-11 13:45 UTCGHSA enrichment
  53. 2026-09-11 10:04 UTCEG score recompute
  54. 2026-09-11 10:04 UTCGHSA enrichment
  55. 2026-09-11 06:22 UTCGHSA enrichment
  56. 2026-09-11 02:43 UTCGHSA enrichment
  57. 2026-09-10 23:04 UTCGHSA enrichment
  58. 2026-09-10 19:24 UTCGHSA enrichment
  59. 2026-09-10 15:43 UTCGHSA enrichment
  60. 2026-09-10 12:04 UTCEG score recompute
  61. 2026-09-10 12:04 UTCGHSA enrichment
  62. 2026-09-10 09:35 UTCEPSS rescore
  63. 2026-09-10 07:36 UTCGHSA enrichment
  64. 2026-09-10 03:57 UTCGHSA enrichment
  65. 2026-09-10 00:18 UTCGHSA enrichment
  66. 2026-09-09 17:03 UTCGHSA enrichment
  67. 2026-09-09 12:16 UTCGHSA enrichment
  68. 2026-09-09 08:34 UTCGHSA enrichment
  69. 2026-09-09 04:54 UTCGHSA enrichment
  70. 2026-09-09 01:16 UTCEG score recompute
  71. 2026-09-09 01:16 UTCGHSA enrichment
  72. 2026-09-08 22:01 UTCEPSS rescore
  73. 2026-09-08 05:58 UTCGHSA enrichment
  74. 2026-09-08 02:17 UTCGHSA enrichment
  75. 2026-09-07 22:37 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57909?
CVE-2026-57909 is a critical vulnerability published on August 25, 2026. A path traversal vulnerability in WatchGuard Agent allows a remote, unauthenticated attacker on an adjacent network to execute arbitrary code on an affected system.
When was CVE-2026-57909 disclosed?
CVE-2026-57909 was first published in the National Vulnerability Database on August 25, 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-2026-57909 actively exploited?
CVE-2026-57909 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 77.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57909?
CVE-2026-57909 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-57909?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57909, 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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