CVE-2026-13371

MEDIUMNVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

Score 4.9 from GitHub Security Advisory published 2026-07-03. NVD baseline CVSS 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.9Exploit: None knownExposed: 0

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

An authenticated administrator can trigger a denial-of-service condition in the Fireware Management Web UI by sending malformed or crafted data to the put_data endpoint, which performs unsafe deserialization of the attacker-supplied input.

CVSS v3
4.9
EG Score
4.9(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity49% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

July 3, 2026

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
No patch confirmed yet.
generic

WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization | WatchGuard Technologies

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00014

Vendor Advisories for CVE-2026-13371(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 14× in last 7d / 76× 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 123 total refreshes for this CVE.

  1. 2026-08-25 16:03 UTCEG score recompute
  2. 2026-08-25 16:03 UTCGHSA enrichment
  3. 2026-08-25 13:48 UTCEPSS rescore
  4. 2026-08-24 13:35 UTCEG score recompute
  5. 2026-08-24 13:35 UTCGHSA enrichment
  6. 2026-08-23 11:11 UTCEG score recompute
  7. 2026-08-23 11:11 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-22 08:47 UTCEG score recompute
  10. 2026-08-22 08:47 UTCGHSA enrichment
  11. 2026-08-21 23:48 UTCEPSS rescore
  12. 2026-08-21 06:23 UTCEG score recompute
  13. 2026-08-21 06:23 UTCGHSA enrichment
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-20 03:59 UTCEG score recompute
  16. 2026-08-20 03:59 UTCGHSA enrichment
  17. 2026-08-19 17:03 UTCEPSS rescore
  18. 2026-08-19 01:13 UTCEG score recompute
  19. 2026-08-19 01:13 UTCGHSA enrichment
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-17 22:49 UTCEG score recompute
  22. 2026-08-17 22:49 UTCGHSA enrichment
  23. 2026-08-16 18:04 UTCEG score recompute
  24. 2026-08-16 18:04 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 02:14 UTCEPSS rescore
  2. 2026-08-15 15:30 UTCEG score recompute
  3. 2026-08-15 15:30 UTCGHSA enrichment
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 13:06 UTCEG score recompute▼ 2.00
  6. 2026-08-14 13:06 UTCGHSA enrichment
  7. 2026-08-14 13:05 UTCNVD updateCVSS v3 → 4.9
  8. 2026-08-14 00:35 UTCEG score recompute
  9. 2026-08-14 00:35 UTCGHSA enrichment
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-12 22:11 UTCEG score recompute
  12. 2026-08-12 22:11 UTCGHSA enrichment
  13. 2026-08-12 13:50 UTCEPSS rescore
  14. 2026-08-11 19:47 UTCEG score recompute
  15. 2026-08-11 19:47 UTCGHSA enrichment
  16. 2026-08-11 13:42 UTCEPSS rescore
  17. 2026-08-10 23:59 UTCEPSS rescore
  18. 2026-08-10 17:23 UTCEG score recompute
  19. 2026-08-10 17:23 UTCGHSA enrichment
  20. 2026-08-10 17:10 UTCEG score recompute
  21. 2026-08-10 17:10 UTCGHSA enrichment
  22. 2026-08-10 01:45 UTCEG score recompute
  23. 2026-08-10 01:45 UTCGHSA enrichment
  24. 2026-08-09 13:46 UTCEPSS rescore
  25. 2026-08-08 23:21 UTCGHSA enrichment
  26. 2026-08-07 20:56 UTCEG score recompute
  27. 2026-08-07 20:56 UTCGHSA enrichment
  28. 2026-08-06 18:32 UTCEG score recompute
  29. 2026-08-06 18:32 UTCGHSA enrichment
  30. 2026-08-06 13:46 UTCEPSS rescore
  31. 2026-08-05 19:17 UTCEPSS rescore
  32. 2026-08-05 16:08 UTCEG score recompute
  33. 2026-08-05 16:08 UTCGHSA enrichment
  34. 2026-08-04 15:09 UTCEPSS rescore
  35. 2026-08-04 10:38 UTCEPSS rescore
  36. 2026-08-04 10:16 UTCEG score recompute
  37. 2026-08-04 10:16 UTCGHSA enrichment
  38. 2026-08-03 10:35 UTCEPSS rescore
  39. 2026-08-03 07:41 UTCGHSA enrichment
  40. 2026-08-02 05:00 UTCEG score recompute
  41. 2026-08-02 05:00 UTCGHSA enrichment
  42. 2026-08-01 04:15 UTCEPSS rescore
  43. 2026-08-01 02:36 UTCGHSA enrichment
  44. 2026-07-31 00:07 UTCEG score recompute
  45. 2026-07-31 00:07 UTCGHSA enrichment
  46. 2026-07-30 16:27 UTCEPSS rescore
  47. 2026-07-30 01:30 UTCEPSS rescore
  48. 2026-07-29 21:40 UTCGHSA enrichment
  49. 2026-07-28 18:17 UTCEG score recompute
  50. 2026-07-28 18:17 UTCGHSA enrichment
  51. 2026-07-28 15:36 UTCEPSS rescore
  52. 2026-07-27 15:51 UTCEG score recompute
  53. 2026-07-27 15:51 UTCGHSA enrichment
  54. 2026-07-27 14:13 UTCEPSS rescore
  55. 2026-07-26 14:54 UTCEPSS rescore
  56. 2026-07-26 14:54 UTCEPSS rescore
  57. 2026-07-26 12:59 UTCEG score recompute
  58. 2026-07-26 12:59 UTCGHSA enrichment
  59. 2026-07-25 14:17 UTCEPSS rescore
  60. 2026-07-24 14:17 UTCEPSS rescore
  61. 2026-07-23 14:18 UTCEPSS rescore
  62. 2026-07-23 03:05 UTCEG score recompute
  63. 2026-07-22 14:08 UTCEPSS rescore
  64. 2026-07-21 15:24 UTCEPSS rescore
  65. 2026-07-20 17:08 UTCEPSS rescore
  66. 2026-07-19 14:30 UTCEPSS rescore
  67. 2026-07-19 02:28 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:22 UTCGHSA enrichment
  70. 2026-07-16 17:02 UTCEPSS rescore
  71. 2026-07-15 16:57 UTCEPSS rescore
  72. 2026-07-15 14:45 UTCGHSA enrichment
  73. 2026-07-15 02:00 UTCEPSS rescore
  74. 2026-07-14 12:16 UTCGHSA enrichment
  75. 2026-07-13 22:30 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-13371?
CVE-2026-13371 is a medium vulnerability published on July 3, 2026. An authenticated administrator can trigger a denial-of-service condition in the Fireware Management Web UI by sending malformed or crafted data to the put_data endpoint, which performs unsafe deserialization of the attacker-supplied input.
When was CVE-2026-13371 disclosed?
CVE-2026-13371 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13371 actively exploited?
CVE-2026-13371 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 72.2% of all scored CVEs.
What is the CVSS score of CVE-2026-13371?
CVE-2026-13371 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-13371?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13371, 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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