Easy Address Book Web Server Buffer overflow vulnerability
Priority MEDIUM 51CWE-119Published · 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 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00984 62nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| EFS Software | Easy Address Book Web Server | 1.6 | — | No fix listed | CNA |
- Easy Address Book Web Server VendorEFS Software Affected 1.6 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:easy_address_book_web_server_project:easy_address_book_web_server:1.6:*:*:*:*:*:*:* | 1.6 | Vulnerable | Easy Address Book Web Server Project |
- cpe:2.3:a:easy_address_book_web_server_project:easy_address_book_web_server:1.6:*:*:*:*:*:*:* Versions 1.6 Vulnerable ·Easy Address Book Web Server Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-4491
- 2026-10-03 Alias added: GHSA-5wvp-xjf2-pj96
References
More EFS Software vulnerabilities
- TI-2025-24256 Easy File Sharing HTTP Server 7.2 Buffer Overflow via POST to /sendemail.ghp CVSS 4.0CRITICAL 9.3
- TI-2006-03828 Stack-based buffer overflow in EFS Software Easy File Sharing FTP Server 2.0 allows… CVSS 2.0HIGH 7.5
- TI-2004-02336 chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service… CVSS 2.0MEDIUM 5.0
- TI-2023-04147 Easy Chat Server Stack-based buffer overflow vulnerability CVSS 3.1CRITICAL 9.8
- TI-2006-01126 Format string vulnerability in Easy File Sharing (EFS) Web Server 3.2 allows remote… CVSS 2.0HIGH 7.8
- TI-2006-06676 Easy Chat Server 2.1 stores sensitive information under the web root with insufficient… CVSS 2.0HIGH 7.8
Sources
- CVE-2023-4491 · CVE Program
- CVE-2023-4491 · NVD
- FIRST EPSS
- GHSA-5wvp-xjf2-pj96 · 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