CVE-2022-50993

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-30. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types. Attackers can upload PHP webshells to the Document directory and execute them via HTTP GET requests to achieve remote code execution as the web server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2022-10-10 (UTC).

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
52.0%
KEV
Not listed

Published

April 30, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 16, 2026
No patch confirmed yet.
generic

Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet | Advisories | VulnCheck

https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet
generic

【漏洞左先锋】【OA漏洞】泛微OA E-Office10 任意文件上传 | CTTalk 长亭合作伙伴技术社区

https://bbs.chaitin.cn/topic/37
generic

泛微 eoffice10 前台任意文件写入漏洞 | CN-SEC 中文网

https://cn-sec.com/archives/1453025.html
generic

泛微e-office体验服务中心_泛微移动办公OA系统标准版_中小组织办公数字化产品

https://service.e-office.cn/knowledge/detail/5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 46× 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 215 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-50993?
CVE-2022-50993 is a critical vulnerability published on April 30, 2026. Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types.…
When was CVE-2022-50993 disclosed?
CVE-2022-50993 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50993 actively exploited?
CVE-2022-50993 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-50993?
CVE-2022-50993 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50993?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50993, 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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