CVE-2025-13826

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 83% 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, nvd
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

Zervit's portable HTTP/web server is vulnerable to remote DoS attacks when a configuration reset request is made. The vulnerability is caused by inadequate validation of user-supplied input. An attacker can exploit this vulnerability by sending malicious requests. If the vulnerability is successfully exploited, the application can be made to stop responding, resulting in a DoS condition. It is possible to manually restart the application.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

April 21, 2026

Last Modified

May 19, 2026

Advisory Details (1)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

Incorrect input validation on the Zervit portable HTTP/Web server | INCIBE-CERT | INCIBE

https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-input-validation-zervit-portable-httpweb-server

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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 220 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-13826?
CVE-2025-13826 is a high vulnerability published on April 21, 2026. Zervit's portable HTTP/web server is vulnerable to remote DoS attacks when a configuration reset request is made. The vulnerability is caused by inadequate validation of user-supplied input. An attacker can exploit this vulnerability by sending malicious requests. If the vulnerability is…
When was CVE-2025-13826 disclosed?
CVE-2025-13826 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-13826 actively exploited?
CVE-2025-13826 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 83.2% of all scored CVEs.
What is the CVSS score of CVE-2025-13826?
CVE-2025-13826 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2025-13826?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-13826, 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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