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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 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 PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

April 30, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Sep 19, 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 4× in last 7d / 22× 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 334 total refreshes for this CVE.

  1. 2026-09-20 20:13 UTCEPSS rescore
  2. 2026-09-16 14:05 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
  4. 2026-09-15 03:07 UTCEPSS rescore
  5. 2026-09-13 16:44 UTCEPSS rescore
  6. 2026-09-11 14:50 UTCEPSS rescore
  7. 2026-09-11 09:34 UTCEPSS rescore
  8. 2026-09-08 21:57 UTCEPSS rescore
  9. 2026-09-07 15:59 UTCEPSS rescore
  10. 2026-09-06 13:45 UTCEPSS rescore
  11. 2026-09-05 15:25 UTCEPSS rescore
  12. 2026-09-04 13:57 UTCEPSS rescore
  13. 2026-09-04 05:04 UTCEPSS rescore
  14. 2026-09-02 14:09 UTCEPSS rescore
  15. 2026-09-01 13:51 UTCEPSS rescore
  16. 2026-08-30 19:15 UTCEPSS rescore
  17. 2026-08-30 01:19 UTCEPSS rescore
  18. 2026-08-28 21:38 UTCEPSS rescore
  19. 2026-08-27 14:22 UTCEPSS rescore
  20. 2026-08-26 14:43 UTCEPSS rescore
  21. 2026-08-25 13:46 UTCEPSS rescore
  22. 2026-08-23 00:17 UTCEPSS rescore
  23. 2026-08-21 23:46 UTCEPSS rescore
  24. 2026-08-20 22:53 UTCEPSS rescore
  25. 2026-08-19 17:01 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 13:45 UTCEPSS rescore
  2. 2026-08-17 13:49 UTCEG score recompute
  3. 2026-08-17 13:49 UTCGHSA enrichment
  4. 2026-08-17 13:44 UTCEPSS rescore
  5. 2026-08-16 14:53 UTCEPSS rescore
  6. 2026-08-16 09:16 UTCGHSA enrichment
  7. 2026-08-16 05:21 UTCEG score recompute
  8. 2026-08-16 05:21 UTCGHSA enrichment
  9. 2026-08-16 02:12 UTCEPSS rescore
  10. 2026-08-15 01:57 UTCEG score recompute
  11. 2026-08-15 01:57 UTCGHSA enrichment
  12. 2026-08-15 01:27 UTCEPSS rescore
  13. 2026-08-14 22:18 UTCGHSA enrichment
  14. 2026-08-14 18:29 UTCGHSA enrichment
  15. 2026-08-14 14:48 UTCGHSA enrichment
  16. 2026-08-14 11:09 UTCGHSA enrichment
  17. 2026-08-14 07:29 UTCGHSA enrichment
  18. 2026-08-14 03:50 UTCEG score recompute
  19. 2026-08-14 03:50 UTCGHSA enrichment
  20. 2026-08-13 21:58 UTCEPSS rescore
  21. 2026-08-13 08:23 UTCGHSA enrichment
  22. 2026-08-13 04:44 UTCGHSA enrichment
  23. 2026-08-13 01:04 UTCGHSA enrichment
  24. 2026-08-12 21:25 UTCGHSA enrichment
  25. 2026-08-12 17:27 UTCEG score recompute
  26. 2026-08-12 17:27 UTCGHSA enrichment
  27. 2026-08-12 13:48 UTCEPSS rescore
  28. 2026-08-11 23:48 UTCGHSA enrichment
  29. 2026-08-11 20:09 UTCGHSA enrichment
  30. 2026-08-11 16:26 UTCEG score recompute
  31. 2026-08-11 16:26 UTCGHSA enrichment
  32. 2026-08-11 09:12 UTCGHSA enrichment
  33. 2026-08-11 05:31 UTCGHSA enrichment
  34. 2026-08-11 01:52 UTCEG score recompute
  35. 2026-08-11 01:51 UTCGHSA enrichment
  36. 2026-08-10 12:09 UTCGHSA enrichment
  37. 2026-08-10 08:29 UTCGHSA enrichment
  38. 2026-08-10 04:49 UTCGHSA enrichment
  39. 2026-08-10 01:10 UTCGHSA enrichment
  40. 2026-08-09 21:30 UTCGHSA enrichment
  41. 2026-08-09 17:50 UTCGHSA enrichment
  42. 2026-08-09 14:11 UTCEG score recompute
  43. 2026-08-09 14:11 UTCGHSA enrichment
  44. 2026-08-09 13:44 UTCEPSS rescore
  45. 2026-08-09 13:44 UTCEPSS rescore
  46. 2026-08-09 10:31 UTCGHSA enrichment
  47. 2026-08-09 06:41 UTCGHSA enrichment
  48. 2026-08-09 03:01 UTCEG score recompute
  49. 2026-08-09 03:01 UTCGHSA enrichment
  50. 2026-08-08 16:34 UTCEPSS rescore
  51. 2026-08-08 10:17 UTCGHSA enrichment
  52. 2026-08-08 06:37 UTCGHSA enrichment
  53. 2026-08-08 02:58 UTCGHSA enrichment
  54. 2026-08-07 23:18 UTCGHSA enrichment
  55. 2026-08-07 19:39 UTCEG score recompute
  56. 2026-08-07 19:39 UTCGHSA enrichment
  57. 2026-08-07 16:24 UTCEPSS rescore
  58. 2026-08-07 16:00 UTCGHSA enrichment
  59. 2026-08-07 12:19 UTCGHSA enrichment
  60. 2026-08-07 02:42 UTCGHSA enrichment
  61. 2026-08-06 20:47 UTCGHSA enrichment
  62. 2026-08-06 17:08 UTCEG score recompute
  63. 2026-08-06 17:08 UTCGHSA enrichment
  64. 2026-08-06 13:44 UTCEPSS rescore
  65. 2026-08-06 13:17 UTCGHSA enrichment
  66. 2026-08-06 09:37 UTCGHSA enrichment
  67. 2026-08-06 05:57 UTCGHSA enrichment
  68. 2026-08-06 02:18 UTCGHSA enrichment
  69. 2026-08-05 22:38 UTCEG score recompute
  70. 2026-08-05 22:38 UTCGHSA enrichment
  71. 2026-08-05 19:15 UTCEPSS rescore
  72. 2026-08-04 15:07 UTCEPSS rescore
  73. 2026-08-04 10:35 UTCEPSS rescore
  74. 2026-08-04 03:52 UTCGHSA enrichment
  75. 2026-08-04 00:09 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 1% probability of exploitation in the next 30 days, which ranks it in the top 45.8% of all scored CVEs.
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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