CVE-2019-25681

HIGHNVD 7.88.4▲
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-04-05. NVD baseline CVSS 7.8; sources differ by 0.6.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 0

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

Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.

CVSS v3
7.8
EG Score
8.4(medium)
EG Risk
54(Track*)
EG Risk 54/100SSVC: 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
Severity84% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

April 5, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated Jun 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Xlight - Free Windows FTP and SFTP server

https://www.xlightftpd.com/index.htm
generic

Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow | Advisories | VulnCheck

https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflow
generic🟡 PoC Available

Xlight FTP Server 3.9.1 - Buffer Overflow (PoC) - Windows dos Exploit

https://www.exploit-db.com/exploits/46458

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 26× 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 214 total refreshes for this CVE.

  1. 2026-09-15 03:05 UTCEPSS rescore
  2. 2026-09-13 16:42 UTCEPSS rescore
  3. 2026-09-12 14:56 UTCEPSS rescore
  4. 2026-09-11 14:48 UTCEPSS rescore
  5. 2026-09-11 09:32 UTCEPSS rescore
  6. 2026-09-07 15:57 UTCEPSS rescore
  7. 2026-09-06 13:44 UTCEPSS rescore
  8. 2026-09-05 15:24 UTCEPSS rescore
  9. 2026-09-04 13:56 UTCEPSS rescore
  10. 2026-09-02 14:07 UTCEPSS rescore
  11. 2026-09-01 03:32 UTCEPSS rescore
  12. 2026-08-30 19:13 UTCEPSS rescore
  13. 2026-08-30 01:18 UTCEPSS rescore
  14. 2026-08-28 21:36 UTCEPSS rescore
  15. 2026-08-27 14:21 UTCEPSS rescore
  16. 2026-08-26 14:42 UTCEPSS rescore
  17. 2026-08-25 13:45 UTCEPSS rescore
  18. 2026-08-24 14:11 UTCEPSS rescore
  19. 2026-08-21 23:45 UTCEPSS rescore
  20. 2026-08-20 22:51 UTCEPSS rescore
  21. 2026-08-19 17:00 UTCEPSS rescore
  22. 2026-08-18 13:44 UTCEPSS rescore
  23. 2026-08-17 13:43 UTCEPSS rescore
  24. 2026-08-16 14:52 UTCEPSS rescore
  25. 2026-08-16 08:28 UTCEG score recompute
Show 75 more
  1. 2026-08-16 08:28 UTCGHSA enrichment
  2. 2026-08-16 02:10 UTCEPSS rescore
  3. 2026-08-15 01:26 UTCEPSS rescore
  4. 2026-08-14 18:48 UTCGHSA enrichment
  5. 2026-08-14 05:36 UTCEG score recompute
  6. 2026-08-14 05:36 UTCGHSA enrichment
  7. 2026-08-13 09:46 UTCGHSA enrichment
  8. 2026-08-12 19:51 UTCEG score recompute
  9. 2026-08-12 19:51 UTCGHSA enrichment
  10. 2026-08-12 13:47 UTCEPSS rescore
  11. 2026-08-11 20:11 UTCEG score recompute
  12. 2026-08-11 20:11 UTCGHSA enrichment
  13. 2026-08-11 03:21 UTCEG score recompute
  14. 2026-08-11 03:21 UTCGHSA enrichment
  15. 2026-08-10 06:58 UTCGHSA enrichment
  16. 2026-08-09 18:03 UTCEG score recompute
  17. 2026-08-09 18:03 UTCGHSA enrichment
  18. 2026-08-09 13:43 UTCEPSS rescore
  19. 2026-08-09 05:07 UTCEG score recompute
  20. 2026-08-09 05:07 UTCGHSA enrichment
  21. 2026-08-08 16:33 UTCEPSS rescore
  22. 2026-08-08 04:08 UTCEG score recompute
  23. 2026-08-08 04:08 UTCGHSA enrichment
  24. 2026-08-07 16:23 UTCEPSS rescore
  25. 2026-08-07 15:13 UTCEG score recompute
  26. 2026-08-07 15:13 UTCGHSA enrichment
  27. 2026-08-06 13:43 UTCEPSS rescore
  28. 2026-08-06 13:07 UTCGHSA enrichment
  29. 2026-08-06 00:11 UTCEG score recompute
  30. 2026-08-06 00:11 UTCGHSA enrichment
  31. 2026-08-05 19:13 UTCEPSS rescore
  32. 2026-08-04 15:05 UTCEPSS rescore
  33. 2026-08-03 22:32 UTCEG score recompute
  34. 2026-08-03 22:32 UTCGHSA enrichment
  35. 2026-08-02 14:28 UTCEG score recompute
  36. 2026-08-02 14:28 UTCGHSA enrichment
  37. 2026-08-02 02:23 UTCEPSS rescore
  38. 2026-08-01 04:12 UTCEPSS rescore
  39. 2026-07-30 16:24 UTCEPSS rescore
  40. 2026-07-30 01:27 UTCEPSS rescore
  41. 2026-07-28 15:32 UTCEPSS rescore
  42. 2026-07-26 14:51 UTCEPSS rescore
  43. 2026-07-26 09:06 UTCEG score recompute
  44. 2026-07-26 09:06 UTCGHSA enrichment
  45. 2026-07-25 14:14 UTCEPSS rescore
  46. 2026-07-24 22:12 UTCNVD updateCVSS v3 → 7.8
  47. 2026-07-24 14:14 UTCEPSS rescore
  48. 2026-07-24 14:14 UTCEPSS rescore
  49. 2026-07-23 14:15 UTCEPSS rescore
  50. 2026-07-23 01:44 UTCEG score recompute
  51. 2026-07-22 22:25 UTCEG score recompute
  52. 2026-07-22 14:05 UTCEPSS rescore
  53. 2026-07-21 15:22 UTCEPSS rescore
  54. 2026-07-21 15:22 UTCEPSS rescore
  55. 2026-07-20 17:04 UTCEPSS rescore
  56. 2026-07-20 17:04 UTCEPSS rescore
  57. 2026-07-19 14:28 UTCEPSS rescore
  58. 2026-07-19 14:28 UTCEPSS rescore
  59. 2026-07-19 02:26 UTCEPSS rescore
  60. 2026-07-19 02:26 UTCEPSS rescore
  61. 2026-07-18 10:01 UTCEPSS rescore
  62. 2026-07-16 16:59 UTCEPSS rescore
  63. 2026-07-16 16:59 UTCEPSS rescore
  64. 2026-07-15 16:55 UTCEPSS rescore
  65. 2026-07-15 16:55 UTCEPSS rescore
  66. 2026-07-13 22:27 UTCEPSS rescore
  67. 2026-07-13 06:10 UTCEPSS rescore
  68. 2026-07-13 06:10 UTCEPSS rescore
  69. 2026-07-12 05:43 UTCEPSS rescore
  70. 2026-07-12 05:43 UTCEPSS rescore
  71. 2026-07-11 08:24 UTCEPSS rescore
  72. 2026-07-11 08:24 UTCEPSS rescore
  73. 2026-07-09 19:06 UTCEPSS rescore
  74. 2026-07-08 15:11 UTCEPSS rescore
  75. 2026-07-07 13:43 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2019-25681?
CVE-2019-25681 is a high vulnerability published on April 5, 2026. Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual…
When was CVE-2019-25681 disclosed?
CVE-2019-25681 was first published in the National Vulnerability Database on April 5, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-25681 actively exploited?
CVE-2019-25681 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 88.9% of all scored CVEs.
What is the CVSS score of CVE-2019-25681?
CVE-2019-25681 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.4.
How do I remediate CVE-2019-25681?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-25681, 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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