CVE-2023-54400

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-29. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

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

Fumasoft Fumeng Cloud contains a SQL injection vulnerability in the AjaxMethod.ashx endpoint that allows unauthenticated remote attackers to inject arbitrary SQL through the Name parameter of the getEmpByname action without any authentication. Attackers can exploit UNION-based SQL injection techniques against the Microsoft SQL Server backend to extract, disclose, and modify database contents, with potential for further compromise of the underlying server. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
75
EG Risk 75/100CISA SSVC

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%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 29, 2026

Last Modified

September 30, 2026

Advisory Details (3)

Auto-updated Sep 30, 2026
No patch confirmed yet.
generic

goby-poc/fumengyun AjaxMethod.ashx SQL injection.json at main · emadshanab/goby-poc · GitHub

https://github.com/emadshanab/goby-poc/blob/main/fumengyun%20%20AjaxMethod.ashx%20SQL%20injection.json
generic

Fumeng Cloud SQL Injection via AjaxMethod.ashx getEmpByname | Advisories | VulnCheck

https://www.vulncheck.com/advisories/fumeng-cloud-sql-injection-via-ajaxmethod-ashx-getempbyname
generic

nuclei-templates/http/vulnerabilities/other/fumasoft-sqli.yaml at main · projectdiscovery/nuclei-templates · GitHub

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/fumasoft-sqli.yaml

Vendor Advisories for CVE-2023-54400(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 48× in last 7d / 48× 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.

  1. 2026-10-05 07:17 UTCGHSA enrichment
  2. 2026-10-05 02:55 UTCEG score recompute
  3. 2026-10-05 02:55 UTCGHSA enrichment
  4. 2026-10-04 23:20 UTCEPSS rescore
  5. 2026-10-04 22:30 UTCGHSA enrichment
  6. 2026-10-04 18:09 UTCGHSA enrichment
  7. 2026-10-04 13:48 UTCGHSA enrichment
  8. 2026-10-04 09:27 UTCGHSA enrichment
  9. 2026-10-04 05:05 UTCGHSA enrichment
  10. 2026-10-04 00:44 UTCGHSA enrichment
  11. 2026-10-03 20:22 UTCGHSA enrichment
  12. 2026-10-03 16:01 UTCEG score recompute
  13. 2026-10-03 16:01 UTCGHSA enrichment
  14. 2026-10-03 14:23 UTCEPSS rescore
  15. 2026-10-03 11:40 UTCGHSA enrichment
  16. 2026-10-03 06:48 UTCGHSA enrichment
  17. 2026-10-03 02:27 UTCGHSA enrichment
  18. 2026-10-02 22:05 UTCGHSA enrichment
  19. 2026-10-02 17:42 UTCEG score recompute
  20. 2026-10-02 17:42 UTCGHSA enrichment
  21. 2026-10-02 13:21 UTCGHSA enrichment
  22. 2026-10-02 09:00 UTCGHSA enrichment
  23. 2026-10-02 04:36 UTCGHSA enrichment
  24. 2026-10-02 00:15 UTCGHSA enrichment
  25. 2026-10-01 19:54 UTCEG score recompute
Show 23 more
  1. 2026-10-01 19:54 UTCGHSA enrichment
  2. 2026-10-01 19:48 UTCEPSS rescore
  3. 2026-10-01 19:48 UTCEPSS rescore
  4. 2026-10-01 15:33 UTCGHSA enrichment
  5. 2026-10-01 11:10 UTCGHSA enrichment
  6. 2026-10-01 06:49 UTCGHSA enrichment
  7. 2026-10-01 02:27 UTCGHSA enrichment
  8. 2026-09-30 22:06 UTCGHSA enrichment
  9. 2026-09-30 17:45 UTCGHSA enrichment
  10. 2026-09-30 16:26 UTCEG score recompute
  11. 2026-09-30 16:26 UTCGHSA enrichment
  12. 2026-09-30 15:30 UTCEG score recompute
  13. 2026-09-30 15:30 UTCGHSA enrichment
  14. 2026-09-30 15:01 UTCEPSS rescore
  15. 2026-09-30 15:01 UTCEPSS rescore
  16. 2026-09-30 12:51 UTCGHSA enrichment
  17. 2026-09-30 08:29 UTCGHSA enrichment
  18. 2026-09-30 04:07 UTCGHSA enrichment
  19. 2026-09-29 23:45 UTCEG score recompute
  20. 2026-09-29 23:45 UTCGHSA enrichment
  21. 2026-09-29 16:34 UTCEG score recompute
  22. 2026-09-29 15:28 UTCEG score recompute
  23. 2026-09-29 15:28 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-54400?
CVE-2023-54400 is a critical vulnerability published on September 29, 2026. Fumasoft Fumeng Cloud contains a SQL injection vulnerability in the AjaxMethod.ashx endpoint that allows unauthenticated remote attackers to inject arbitrary SQL through the Name parameter of the getEmpByname action without any authentication. Attackers can exploit UNION-based SQL injection…
When was CVE-2023-54400 disclosed?
CVE-2023-54400 was first published on September 29, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54400 actively exploited?
CVE-2023-54400 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-54400?
CVE-2023-54400 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2023-54400?
No fix for CVE-2023-54400 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2023-54400 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-54400

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