There is a remote stack-based buffer overflow (SEH) in register.ghp in EFS Software Easy…
Priority MEDIUM 63CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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-787 and the CVSS impact.
Summary
There is a remote stack-based buffer overflow (SEH) in register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1. By sending an overly long username string to registresult.htm for registering the user, an attacker may be able to execute arbitrary code.
Why it matters now
EPSS 0.24118 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and 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:echatserver:easy_chat_server:*:*:*:*:*:*:*:* | 2.0 – 3.1 | Vulnerable | Echatserver |
- cpe:2.3:a:echatserver:easy_chat_server:*:*:*:*:*:*:*:* Versions 2.0 – 3.1 Vulnerable ·Echatserver
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9544
- 2026-10-03 Alias added: GHSA-v53x-rh5j-prv2
References
Exploit 1
More Echatserver Easy Chat Server vulnerabilities
- TI-2018-15446 EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter CVSS 4.0CRITICAL 9.3
- TI-2019-15666 Easy Chat Server 3.1 Denial of Service via message Parameter CVSS 4.0HIGH 8.7
- TI-2022-22094 Efs Software Easy Chat Server Version 3.1 was discovered to contain a DLL hijacking… CVSS 3.1HIGH 7.8
- TI-2017-06958 register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers… CVSS 3.1HIGH 7.5
- TI-2017-06946 register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers… CVSS 3.1HIGH 7.5
- TI-2019-14728 An issue was discovered in EFS Easy Chat Server 3.1. CVSS 3.1HIGH 7.5
Sources
- CVE-2017-9544 · CVE Program
- CVE-2017-9544 · NVD
- FIRST EPSS
- GHSA-v53x-rh5j-prv2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences