CVE-2019-25714

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 52% 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
Elevated
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.3Exploit: Elevated riskExposed: 0

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

Seeyon OA A8 contains an unauthenticated arbitrary file write vulnerability in the /seeyon/htmlofficeservlet endpoint that allows remote attackers to write arbitrary files to the web application root by sending specially crafted POST requests with custom base64-encoded payloads. Attackers can write JSP webshells to the web root and execute them through the web server to achieve arbitrary OS command execution with web server privileges. Exploitation evidence was first observed by the Shadowserver Foundation on 2021-03-26 (UTC).

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
73(Attend)
EG Risk 73/100SSVC: Attend

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
Severity93% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

April 21, 2026

Last Modified

July 28, 2026

Advisory Details (7)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

Seeyon Office Anywhere (OA) A8 Unauthenticated Arbitrary File Write via htmlofficeservlet | Advisories | VulnCheck

https://www.vulncheck.com/advisories/seeyon-office-anywhere-oa-a8-unauthenticated-arbitrary-file-write-via-htmlofficeservlet
generic

Just a moment

https://www.fortiguard.com/encyclopedia/ips/48874/seeyon-office-anywhere-htmlofficeservlet-arbitrary-file-upload
generic

Attack Signature Detail Page

https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=31713
generic
https://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/90916/Security_Notification_reseller_en-US.pdf
generic

致远 OA A8 htmlofficeservlet getshell (POC&EXP) - Reber's Blog

https://web.archive.org/web/20190821034711/http://wyb0.com/posts/2019/seeyon-htmlofficeservlet-getshell/
generic

A8 Reviews in 2026

https://sourceforge.net/software/product/A8/
generic

致远 OA A8 htmlofficeservlet getshell 漏洞 - Wiki

https://wiki.96.mk/Web%E5%AE%89%E5%85%A8/%E8%87%B4%E8%BF%9Coa/%E8%87%B4%E8%BF%9C%20OA%20A8%20htmlofficeservlet%20getshell%20%E6%BC%8F%E6%B4%9E/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 280 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 10:37 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 06:18 UTCEG score recompute
  2. 2026-08-16 06:18 UTCGHSA enrichment
  3. 2026-08-16 02:10 UTCEPSS rescore
  4. 2026-08-15 01:26 UTCEPSS rescore
  5. 2026-08-14 22:21 UTCGHSA enrichment
  6. 2026-08-14 18:05 UTCGHSA enrichment
  7. 2026-08-14 13:02 UTCGHSA enrichment
  8. 2026-08-14 08:46 UTCGHSA enrichment
  9. 2026-08-14 04:29 UTCEG score recompute
  10. 2026-08-14 04:29 UTCGHSA enrichment
  11. 2026-08-13 08:45 UTCGHSA enrichment
  12. 2026-08-13 03:13 UTCGHSA enrichment
  13. 2026-08-12 22:57 UTCGHSA enrichment
  14. 2026-08-12 18:40 UTCEG score recompute
  15. 2026-08-12 18:40 UTCGHSA enrichment
  16. 2026-08-12 13:47 UTCEPSS rescore
  17. 2026-08-12 01:24 UTCGHSA enrichment
  18. 2026-08-11 21:08 UTCGHSA enrichment
  19. 2026-08-11 16:52 UTCEG score recompute
  20. 2026-08-11 16:51 UTCGHSA enrichment
  21. 2026-08-11 06:43 UTCGHSA enrichment
  22. 2026-08-11 02:27 UTCEG score recompute
  23. 2026-08-11 02:26 UTCGHSA enrichment
  24. 2026-08-10 10:06 UTCGHSA enrichment
  25. 2026-08-10 05:49 UTCGHSA enrichment
  26. 2026-08-10 01:33 UTCGHSA enrichment
  27. 2026-08-09 21:16 UTCGHSA enrichment
  28. 2026-08-09 16:59 UTCEG score recompute
  29. 2026-08-09 16:59 UTCGHSA enrichment
  30. 2026-08-09 13:43 UTCEPSS rescore
  31. 2026-08-09 12:43 UTCGHSA enrichment
  32. 2026-08-09 07:59 UTCGHSA enrichment
  33. 2026-08-09 03:42 UTCEG score recompute
  34. 2026-08-09 03:42 UTCGHSA enrichment
  35. 2026-08-08 16:33 UTCEPSS rescore
  36. 2026-08-08 10:20 UTCGHSA enrichment
  37. 2026-08-08 06:03 UTCGHSA enrichment
  38. 2026-08-08 01:47 UTCGHSA enrichment
  39. 2026-08-07 21:30 UTCGHSA enrichment
  40. 2026-08-07 17:14 UTCEG score recompute
  41. 2026-08-07 17:14 UTCGHSA enrichment
  42. 2026-08-07 16:23 UTCEPSS rescore
  43. 2026-08-07 12:57 UTCGHSA enrichment
  44. 2026-08-06 21:49 UTCGHSA enrichment
  45. 2026-08-06 17:26 UTCEG score recompute
  46. 2026-08-06 17:26 UTCGHSA enrichment
  47. 2026-08-06 13:43 UTCEPSS rescore
  48. 2026-08-06 12:01 UTCGHSA enrichment
  49. 2026-08-06 07:45 UTCGHSA enrichment
  50. 2026-08-06 03:28 UTCGHSA enrichment
  51. 2026-08-05 23:11 UTCEG score recompute
  52. 2026-08-05 23:11 UTCGHSA enrichment
  53. 2026-08-05 19:13 UTCEPSS rescore
  54. 2026-08-04 15:05 UTCEPSS rescore
  55. 2026-08-04 05:56 UTCGHSA enrichment
  56. 2026-08-04 01:40 UTCGHSA enrichment
  57. 2026-08-03 21:23 UTCEG score recompute
  58. 2026-08-03 21:23 UTCGHSA enrichment
  59. 2026-08-03 01:38 UTCGHSA enrichment
  60. 2026-08-02 21:22 UTCGHSA enrichment
  61. 2026-08-02 17:05 UTCGHSA enrichment
  62. 2026-08-02 12:49 UTCEG score recompute
  63. 2026-08-02 12:49 UTCGHSA enrichment
  64. 2026-08-02 02:23 UTCEPSS rescore
  65. 2026-08-01 04:12 UTCEPSS rescore
  66. 2026-07-30 16:24 UTCEPSS rescore
  67. 2026-07-30 01:27 UTCEPSS rescore
  68. 2026-07-28 15:32 UTCEPSS rescore
  69. 2026-07-28 02:25 UTCEG score recompute
  70. 2026-07-28 02:25 UTCGHSA enrichment
  71. 2026-07-26 14:51 UTCEPSS rescore
  72. 2026-07-25 14:14 UTCEPSS rescore
  73. 2026-07-24 14:14 UTCEPSS rescore
  74. 2026-07-24 14:14 UTCEPSS rescore
  75. 2026-07-23 14:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-25714?
CVE-2019-25714 is a critical vulnerability published on April 21, 2026. Seeyon OA A8 contains an unauthenticated arbitrary file write vulnerability in the /seeyon/htmlofficeservlet endpoint that allows remote attackers to write arbitrary files to the web application root by sending specially crafted POST requests with custom base64-encoded payloads. Attackers can write…
When was CVE-2019-25714 disclosed?
CVE-2019-25714 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-25714 actively exploited?
CVE-2019-25714 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 50.7% of all scored CVEs.
What is the CVSS score of CVE-2019-25714?
CVE-2019-25714 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2019-25714?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-25714, 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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