An Access Control vulnerability exists in BigAntSoft BigAnt office messenger 5.6 via…
Priority MEDIUM 40CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
An Access Control vulnerability exists in BigAntSoft BigAnt office messenger 5.6 via im_webserver, which could let a malicious user upload PHP Trojan files.
Why it matters now
EPSS 0.01145 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bigantsoft:bigant_office_messenger_5:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | BigAntSoft |
- cpe:2.3:a:bigantsoft:bigant_office_messenger_5:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·BigAntSoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-43430
- 2026-10-03 Alias added: GHSA-xw8x-6f24-54jx
References
More BigAntSoft Bigant Office Messenger 5 vulnerabilities
- TI-2024-36657 BigAnt Office Messenger 5.6.06 is vulnerable to SQL Injection via the 'dev_code' parameter. CVSS 3.1MEDIUM 6.3
Sources
- CVE-2021-43430 · CVE Program
- CVE-2021-43430 · NVD
- FIRST EPSS
- GHSA-xw8x-6f24-54jx · GitHub Advisory Database · CC BY 4.0
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